Research Summaries (2006 - 2010)

Research Summaries (2006 - 2010)

The date that each webpage was last updated is in paratheses.

  • ACT Handouts. The ACT Handout was created annually from 2006 - 2014.
  • ACT/RFT Reader Update. This page includes a list of recent ACT/RFT publications with brief summaries for each article (2008 - 2011).
  • RFT Studies. Includes a reference list of published RFT studies (2010).
  • Correlational studies. Includes a reference list of published correlational studies with ACT-relevant measures (2009).
  • Case Studies. Includes a reference list of published ACT case studies (2008).


Community

ACT for addictions: Studies and publications

ACT for addictions: Studies and publications

There is an Applying ACT to Addictions Special Interest Group (SIG) that ACBS members can join.

For an up-to-date list of ACT RCTs for addiction, ACBS members can go to the Applying ACT to Addictions SIG Resources.


Below is summarized existing ACT empirical articles and references related to substance abuse, gambling, and recovery. Please contribute by adding to it if you see that references are missing.

Gambling related references:

Dymond, S. & Whelan, R. (2007). Verbal relations and the behavior analysis of gambling. Analysis of Gambling Behavior, 1, 19-20

Nastally, B. L. & Dixon, M. R. (2012). The Effect of a Brief Acceptance and Commitment Therapy Intervention on the Near-Miss Effect in Problem Gamblers. Psychological Record, 62 (4), 677-690.

Non empirical publications on substance abuse

Batten, S. V., DeViva, J. C., Santanello, A. P., Morris, L. J., Benson, P. R., & Mann, M. A. (2009). Acceptance and Commitment Therapy for comorbid PTSD and substance use disorders. In J. Blackledge, J. Ciarrochi, & F. Dean (Eds.), Acceptance and Commitment Therapy: Current Directions (pp. 311-328). Queensland, Australia: Australian Academic Press.

Buckner, J. D., Zvolensky, M. J.,  Farris, S. G., & Hogan, J. (in press). Social Anxiety and Coping Motives for Cannabis Use: The Impact of Experiential Avoidance.
Psychology of Addictive Behaviors.

Heffner, M. & Eifert, G. (2003). Valued directions: Acceptance & Commitment Therapy in the treatment of alcohol dependence. Cognitive and Behavioral Practice, 10, 378-383.

Luoma, J.B. & Kohlenberg, B. S. (2012). Self-Stigma and Shame in Addictions. In S. C. Hayes & M. Levin (Eds). Acceptance, Mindfulness, Values, and Addictive Behaviors: Counseling with Contemporary Cognitive Behavioral Therapies. Oakland: New Harbinger.

Smout, M. (2008). Psychotherapy for Methamphetamine Dependence. Drug and Alcohol Services South Australia 2008: 429. https://www.sahealth.sa.gov.au

Turner, N., Welches, P., & Conti, S. (2013). Mindfulness-Based Sobriety. New Habringer, Oakland, CA. (book that integrates ACT with some other related approaches)

Wilson, K. G. & Byrd, M. R. (2004). Acceptance and Commitment Therapy for Substance Abuse and Dependence. In S. C. Hayes & K. Strosahl, (Eds.)A Practical Guide to Acceptance and Commitment Therapy (pp. 153-184). New York: Springer Press. (preprint available from 1st author -- click on his name above.)

Wilson, K. G. & Hayes, S. C. (2000). Why it is crucial to understand thinking and feeling: an analysis and application to drug abuse. The Behavior Analyst, 23, 25-43.

Wilson, K. G., Hayes, S. C., & Byrd, M. (2000). Exploring compatibilities between Acceptance and Commitment Therapy and 12-Step treatment for substance abuse. Journal of Rational-Emotive and Cognitive-Behavior Therapy, 18, 209-234.

Substance abuse research

Batten, S. V., & Hayes, S. C. (2005). Acceptance and Commitment Therapy in the Treatment of Comorbid Substance Abuse and Post-Traumatic Stress Disorder: A Case Study. Clinical Case Studies, 4(3), 246-262.

Bricker, J. B., Mann, S. L., Marek, P. M., Liu, J. M., Peterson, A. V. (2010). Telephone-delivered acceptance and commitment therapy for adult smoking cessation: A feasibility study. Nicotine & Tobacco Research, 12,454-458.

Bricker, J., Wyszynski, C., Comstock, B., & Heffner, J. L. (2013). Pilot randomized controlled trial of web-based acceptance and commitment therapy for smoking cessation. Nicotine & Tobacco Research, 15(10), 1756-1764.  

Brown, R. A., Palm, K. M., Strong, D. R., Lejuez, C. W., Kahler, C. W. Zvolensky, M. J., Hayes, S. C., Wilson, K. G., Gifford, E. V. (2008). Development of an exposure- and ACT-based distress tolerance treatment for early lapse smokers: Rationale, program description, and preliminary findings. Behavior Modification, 32, 302-332.

Gifford, E. V., Kohlenberg, B. S., Hayes, S. C., Antonuccio, D. O., Piasecki, M. M.., Rasmussen-Hall, M. L., & Palm, K. M. (2004). Acceptance theory-based treatment for smoking cessation: An initial trial of Acceptance and Commitment Therapy. Behavior Therapy, 35, 689-705.

Gifford, E. V., Kohlenberg, B., Hayes, S. C., Pierson, H., Piasecki, M., Antonuccio, D., & Palm, K. (2011). Does acceptance and relationship focused behavior therapy contribute to bupropion outcomes? A randomized controlled trial of FAP and ACT for smoking cessation. Behavior Therapy, 42, 700-715. L

Hayes, S. C., & Levin, M. (Eds.). (2012). Mindfulness and Acceptance for Addictive Behaviors: Applying Contextual CBT to Substance Abuse and Behavioral Addictions. New Harbinger Publications.

Hayes, S. C., Wilson, K.G., Gifford, E.V., Bissett, R., Piasecki, M., Batten, S.V., Byrd, M., & Gregg, J. (2004). A preliminary trial of twelve-step facilitation and acceptance and commitment therapy with polysubstance-abusing methadone-maintained opiate addicts. Behavior Therapy, 35, 667-688.

Luoma, J. B., Drake, C., Hayes, S. C., Kohlenberg, B. (2011). Substance Abuse and Psychological Flexibility: The Development of a New Measure. Addiction Research and Theory, 19(1), 3-13.

Luoma, J.B., Nobles, R. H., Drake, C., E., Hayes, S. C., O-Hair, A., Fletcher, L., & Kohlenberg, B. S. (2013). A New Measure of Self-Stigma in Addiction: Measure Development and Psychometrics. Journal of Psychopathology and Behavioral Assessment, 34, 1-12.

Luoma, J. B., Kohlenberg, B. S., Hayes, S. C., Bunting, K. & Rye, A. K. (2008). Reducing the self stigma of substance abuse through acceptance and commitment therapy: Model, manual development, and pilot outcomes. Addiction Research & Therapy, 16, 149-165.

Luoma, J. B., & Kohlenberg, B.S., Hayes, S. C., & Fletcher, L. (2012). Slow and Steady Wins the Race: A Randomized Clinical Trial of Acceptance and Commitment Therapy Targeting Shame in Substance Use Disorders. Journal of Consulting and Clinical Psychology, 80, 43-51.

Smout, M. F., Longo, M., Harrison, S., Minniti, R., Wickes, W., & White, J. M. (2010). Psychosocial treatment for methamphetamine use disorders: A preliminary randomized controlled trial of cognitive behavior therapy and acceptance and commitment therapy. Substance Abuse, 31, 98–107.

Stotts, A., Masuda, A., & Wilson, K. (2009) Using Acceptance and Commitment Therapy During Methadone Dose Reduction: Rationale, Treatment Description, and a Case Report. Cognitive and Behavioral Practice, 16, 205-213.

Stotts, A. L., Green, C., Masuda, A., Grabowski, J., Wilson, K., Northrup, T. F., ... & Schmitz, J. M. (2012). A stage I pilot study of acceptance and commitment therapy for methadone detoxification. Drug and Alcohol Dependence, 125(3), 215-222.

Villagrá Lanza, P., & González Menéndez, A. (2013). Acceptance and Commitment Therapy for drug abuse in incarcerated women. Psicothema, 25(3).  This is part of a larger study so if it better to refewr to the full data set: Villagrá P, Fernández P, Rodríguez F, González A. (in press). Acceptance and commitment therapy vs. cognitive behavioural therapy in the treatment of substance use disorder with incarcerated women. Journal of Clinical Psychology. The long term (18 month) follow up data are reported in González-Menéndez, A., Fernández, P., Rodríguez, F., & Villagrá, P. (2014) Long-term outcomes of Acceptance and Commitment Therapy in drug-dependent female inmates: A randomized controlled trial. International Journal of Clinical Health Psychology, 14, 18-27.

Twohig, M. P., Shoenberger, D., & Hayes, S. C. (2007). A preliminary investigation of Acceptance and Commitment Therapy as a treatment for marijuana dependence in adults. Journal of Applied Behavior Analysis, 40,619-632.

Tull, M., Schulzinger, D., Schmidt, N.B., Zvolensky, M.J., Lejuez, C. W. (2007). Development and initial examination of a brief intervention for heightened anxiety sensitivity among heroin users. Behavior Modification, 31, 220-242.

Vilardaga, R., Luoma, J.B., Hayes, S.C., Pistorello, J., Levin, M., Hildebrandt, M.J., Kohlenberg, B., Roget, N. & Bond, F.W. (in press). Burnout among the addiction counseling workforce: The differential roles of mindfulness and values-based processes and worksite factors. Journal of Substance Abuse Treatment.

Jason Luoma

ACT Group Intervention Research

ACT Group Intervention Research

Here are just a few of the studies on ACT done in groups (some of these also have individual sessions, but all have groups as a substantial part of the intervention):

Bond, F. W. & Bunce, D. (2000). Mediators of change in emotion-focused and problem-focused worksite stress management interventions. Journal of Occupational Health Psychology, 5, 156-163.

Zettle, R. D., & Raines, J. C. (1989). Group cognitive and contextual therapies in treatment of depression. Journal of Clinical Psychology, 45,438-445.

Hayes, S. C., Bissett, R., Roget, N., Padilla, M., Kohlenberg, B. S., Fisher, G., Masuda, A., Pistorello, J., Rye, A. K., Berry, K. & Niccolls, R. (2004). The impact of acceptance and commitment training and multicultural training on the stigmatizing attitudes and professional burnout of substance abuse counselors. Behavior Therapy, 35, 821-835.

Hayes, S. C., Wilson, K. G., Gifford, E. V., Bissett, R., Piasecki, M., Batten, S. V., Byrd, M., & Gregg, J. (2004). A randomized controlled trial of twelve-step facilitation and acceptance and commitment therapy with polysubstance abusing methadone maintained opiate addicts. Behavior Therapy, 35, 667-688.

Gifford, E. V., Kohlenberg, B. S., Hayes, S. C., Antonuccio, D. O., Piasecki, M. M.., Rasmussen-Hall, M. L., & Palm, K. M. (2004). Acceptance theory-based treatment for smoking cessation: An initial trial of Acceptance and Commitment Therapy. Behavior Therapy, 35, 689-705.

McCracken, L. M, Vowles, K. E., & Eccleston, C. (2005). Acceptance-based treatment for persons with complex, long-standing chronic pain: A preliminary analysis of treatment outcome in comparison to a waiting phase. Behaviour Research and Therapy, 43, 1335-1346.

Gratz, K. L. & Gunderson, J. G. (2006). Preliminary data on an acceptance-based emotion regulation group intervention for deliberate self-harm among women with Borderline Personality Disorder. Behavior Therapy, 37, 25-35.

Blackledge, J. T. & Hayes, S. C. (2006). Using Acceptance and Commitment Training in the support of parents of children diagnosed with autism. Child & Family Behavior Therapy, 28 (1), 1-18.

Lundgren, A. T., Dahl, J., Melin, L. & Kees, B. (2006). Evaluation of Acceptance and Commitment Therapy for drug refractory epilepsy: A randomized controlled trial in South Africa. Epilepsia, 47, 2173-2179.

Gregg, J. A., Callaghan, G. M., Hayes, S. C., & Glenn-Lawson, J. L. (2007). Improving diabetes self-management through acceptance, mindfulness, and values: A randomized controlled trial. Journal of Consulting and Clinical Psychology, 75(2), 336-343.

Luoma, J. B., Hayes, S. C., Roget, N., Fisher, G., Padilla, M., Bissett, R., Kohlenberg, B. K. , Holt, C., & & Twohig, M. P. (2008). Augmenting continuing education with psychologically-focused group consultation: Effects on adoption of Group Drug Counseling. Psychotherapy Theory, Research, Practice, Training, 44, 463-469.

Varra, A. A., Hayes, S. C., Roget, N., & Fisher, G. (2008). A randomized control trial examining the effect of Acceptance and Commitment Training on clinician willingness to use evidence-based pharmacotherapy. Journal of Consulting and Clinical Psychology, 76, 449-458.

Lillis, J., Hayes, S. C., Bunting, K., Masuda, A. (2009). Teaching acceptance and mindfulness to improve the lives of the obese: A preliminary test of a theoretical model. Annals of Behavioral Medicine, 37, 58-69.

Tapper, K., Shaw, C., Ilsley, J., Hill, A. J., Bond, F. W., & Moore, L. (2009). Exploratory randomised controlled trial of a mindfulness-based weight loss intervention for women. Appetite, 52, 396–404.

Flaxman, P. E. & Bond, F. W. (2010). A randomised worksite comparison of acceptance and commitment therapy and stress inoculation training. Behaviour Research and Therapy 43, 816-820.

Flaxman, P. E., & Bond, F. W. (2010). Worksite stress management training: Moderated effects and clinical significance. Journal of Occupational Health Psychology, 15, 347-358.

Fledderus, M., Bohlmeijer, E. T., Smit, F., & Westerhof, G. J. (2010). Mental health promotion as a new goal in public mental health care: A randomized controlled trial of an intervention enhancing psychological flexibility. American Journal of Public Health, 10, 2372-2378.

Bohlmeijer, E. T., Fledderus, M., Rokx, T. A., & Pieterse, M. E. (2011). Efficacy of an early intervention based on acceptance and commitment therapy for adults with depressive symptomatology: Evaluation in a randomized controlled trial. Behaviour Research and Therapy, 49, 62-67.

Brinkborg, H., Michanek, J., Hesser, H., & Berglund, G. (2011). Acceptance and commitment therapy for the treatment of stress among social workers: A randomized controlled trial. Behaviour Research and Therapy, 49, 389-398.

Pearson, A. N., Follette, V. M. & Hayes, S. C. (in press). A pilot study of Acceptance and Commitment Therapy (ACT) as a workshop intervention for body dissatisfaction and disordered eating attitudes. Cognitive and Behavioral Practice.

Luoma, J. B., Kohlenberg, B. S., Hayes, S. C. & Fletcher, L. (in press). Slow and steady wins the race: A randomized clinical trial of Acceptance and Commitment Therapy targeting shame in substance use disorders. Journal of Consulting and Clinical Psychology.

Morton, J., Snowdon, S., Gopold, M. & Guymer, E. (in press). Acceptance and Commitment Therapy group treatment for symptoms of Borderline Personality Disorder: A public sector pilot study. Cognitive and Behavioral Practice.

Folke, F., Parling, T., & Melin, L. (in press). Acceptance and Commitment Therapy for depression: A preliminary randomized clinical trial for unemployed on long-term sick leave. Cognitive and Behavioral Practice.

Biglan, A., Layton, G. L., Backen Jones, L., Hankins, M. & Rusby, J. C. (in press). The value of workshops on psychological flexibility for early childhood special education staff. Topics in Early Childhood Special Education.  

Most of these studies are in the publications area of the site (and if one is missing prompt the author to get it up there).

Steven Hayes

ACT for Health Problems

ACT for Health Problems

As healthcare delivery continues to move towards and integrated care model, the connections between biological, psychological, and social processes affecting health remain minimally understood. Researchers have been exploring the role of acceptance, mindfulness, and values in producing positive health outcomes, while examining the negative role of experiential avoidance in the development and maintenance of health problems. ACT studies have been conducted in the areas of chronic pain, smoking, stress, burnout, diabetes management, and epilepsy with more studies in progress. In this section you will find links to researchers, studies, and applications of ACT in the areas of Wellness, Behavioral Health, Health Psychology, and Behavioral Medicine.

Jason Lillis

ACT for Weight Control

ACT for Weight Control
A number of researchers are working on weight control issues from an ACT/ RFT perspective. Here is where you will find the relevant research and conceptual issues.
Jason Lillis

ACT Theory and Weight Control

ACT Theory and Weight Control

From an ACT perspective, many of the psychological factors related to weight control that were discussed previously can be grouped into three categories:

  • Persistence in the face of difficult emotions and thoughts or distress tolerance
  • Cognitive rigidity
  • Motivational factors

Persistence: Individuals who have difficulty maintaining weight loss typically report or have been found to eat in response to stress and other negative affective states, such as hopelessness, helplessness, anger, anxiety, or boredom. From an ACT perspective, this can be seen as a problem with persistence or distress tolerance. The ACT theory of psychopathology suggests that attempts to change or eliminate unwanted private experiences (experiential avoidance) result in a narrow set of behavioral responses. In this case, the presence of uncomfortable or undesirable emotions consistently occasions eating for comfort. The problem is that the short-term effects of reducing negative affect have little or no impact on an individual’s long-term ability to face discomfort and lead a healthy, vital life. Each instance strengthens the relationship between uncomfortable emotion and avoidance. In a sense, the individual becomes less able to deal with uncomfortable emotions over time and eating is required more and more as a coping response.

Rigidity: Individuals who have difficulty maintaining weight loss typically report or have been found to adhere to rigid thinking patterns and rigid control of eating behaviors. Unsuccessful maintainers frequently adhere to dichotomous “all or nothing” thinking, viewing a minor misstep as a total failure or discounting any gains that fall short of some imagined ideal as meaningless. These individuals are prone to alternating between total restriction of desirable foods and a complete lack of weight controls all together. From and ACT perspective, this can be viewed as cognitive fusion. Cognitive fusion refers to situations in which behavior is excessively regulated by verbal rules and is insensitive to direct experiences. Individuals may be responding to verbal formulations, such as, “I had cake therefore I blew it, so what’s the point” or, “I only lost 15 pounds. I’ll never get to where I want to be.” These private events are experienced as literal truth, not as experiences that can be noticed while not being believed nor disbelieved. Individuals respond as though this is a true state of affairs and engage in behaviors that are inconsistent with a healthy, vital life.

Motivational factors: Individuals who have difficulty maintaining weight loss typically report attempting to lose weight in response to pressure from friends, family members, or health professionals as opposed to personal reasons, such as caring for oneself, wanting to be more healthy, or less activity restriction. From an ACT perspective, this can be seen as a form of rule-governance called pliance. Pliance occurs when individuals engage in behaviors in an attempt to please others or “be good” (Hayes, Strosahl et al., 1999). When this function dominates over direct, personal experiences of what works, problems can occur. These externally based contingencies are often not enough to maintain behavior outside the presence of the contextual variables (e.g. family member telling them they are doing a good job). Given the lifelong nature of maintaining weight, it is unlikely that excessive pliance could be a successful long-term behavioral approach. From an ACT perspective, individuals do not need to engage in behaviors consistent with weight maintenance in order to be praised by others; they can do them as an expression of chosen personal values (also called augmenting) and doing what works in regard to those values (also called tracking). In this respect, weight maintenance behaviors are less rigid and are more likely to be tied to the direct contingencies necessary for success.

Motivation, then, can be viewed primarily as a values issue. People are often not connected to their values. It is possible that there is frequently a disparity between what people want in their lives and what they are actually doing. This disparity can be painful to contact, thus relegating the issue of values to the background. Acceptance and defusion can help create a context where this disparity can be noticed without attachment to the painful private events that can accompany this connection. From an ACT perspective, then, values work involves goal setting/ attainment and the willingness to say/ know what is truly wanted. This involves the ability to recognize and be in contact with the disparity between what is desired and what is currently being done.

Jason Lillis

Relevant Psychological Variables

Relevant Psychological Variables
The ability to cope with stress has been associated with weight maintenance. Individuals who were described as having poor coping skills, or a poor ability to manage internal or external demands that are appraised as stressful, have been show to regain weight when confronted with stressful life events (S. Byrne, Cooper, & Fairburn, 2003; Gormally & Rardin, 1981; Gormally, Rardin, & Black, 1980; Grilo, Shiffman, & Wing, 1989). People who regain lost weight tend to eat in response to the presence of negative emotional states or use food to regulate their mood; a phenomenon often referred to as emotional eating (S. Byrne et al., 2003; Ganley, 1989). Obese people who have difficulty losing or keeping off weight have been shown to use food as a source of comfort and satisfaction (Castelnuovo-Tedesco & Schiebel, 1975), eat after difficult interpersonal situations (Hockley, 1979), and eat in response to hopelessness, helplessness, anger, anxiety, or boredom (Hudson & Williams, 1981; Rotmann & Becker, 1970). Motivational factors have also been associated with weight maintenance. Successful weight maintainers have been found to be motivated to lose weight for more personal reasons as opposed to pressures from family, friends, or medical professionals (Ogden, 2000). It appears that when a person is intrinsically motivated, and weight loss is tied to meaningful outcomes other than just losing weight, patients tend to be more successful in keeping weight off. Self-efficacy has been also been associated with weight maintenance. Self-efficacy can be described as a belief in one’s capability to produce desired outcomes in one’s life. Related, individuals who respond to overeating episodes passively tend to regain weight more than those who respond actively (Jeffery et al., 1984). The key difference seems to be that active responders somehow do not get stuck when confronted with adversity. Rigid versus flexible control of eating behavior has been associated with weight regain. Rigid control is characterized by dichotomous ‘all or nothing’ thinking and alternating periods of severe restriction and no weight control efforts. Flexible control is characterized by a ‘more or less’ approach, a long-term outlook, and the inclusion of desired foods at moderate amounts (Westenhoefer, 2001). Despite the literature findings, potentially important psychological variables are rarely targeted in clinical trials of comprehensive weight loss programs or program components. Many interventions lack a psychological component altogether (for a review, see Avenell et al., 2004).
Jason Lillis

Studies on or Related to Weight Maintenance

Studies on or Related to Weight Maintenance

Outcome Studies: Weight Maintenance

Micro/Component Studies: Weight Maintenance

  • Lillis, J. (2008). Acceptance and Commitment Therapy for the treatment of obesity-related stigma and sustained weight loss. Unpublished doctoral dissertation. University of Nevada, Reno.

  • Lillis, J., Thomas, J., Niemeier, H., & Wing, R. (2017). Exploring process variables through which acceptance-based behavioral interventions may improve weight loss maintenance. Journal of Contextual Behavioral Science, 6(4), 398-403.

98 participants with chocolate cravings were exposed to a CBT-based protocol and an ACT-based protocol or no instructions and required to carry chocolate with them of for two days. Those more impacted by food related cues ate less and had fewer cravings in the ACT condition.

Measurement Development: Weight Maintenance

Psychological Flexibility and Weight Maintenance

Physical Activity and Weight Maintenance

Body Image and Weight Maintenance

Jason Lillis

The Problem of Obesity

The Problem of Obesity

Obesity has been referred to as a dangerous epidemic and one of the most important public health challenges of the 21st century. The sharp increase in obesity has contributed to increases in related conditions, causing a sizeable economic cost burden for health providers and funding agencies. The 2002 estimated U.S. cost burden for obesity was $92.6 billion (Finkelstein, Fiebelkorn, & Wang, 2003).

It has been shown that marketplace food portions have increased in size since the 1970’s(Young & Nestle, 2002). People have been eating out more (K. Ball, Brown, & Crawford, 2002), food industry marketing has increased, and larger numbers of new products are being introduced (Gallo, 1990). Most Americans are sedentary. Technological advances have led to an increase in use of computers, cars, elevators, and televisions, with subsequent decreases in athletic activities including walking and bicycling.

Obese people also face discrimination resulting in external consequences. A recent review of the literature found evidence of obesity discrimination at every stage of the employment cycle (Roehling, 1999). Negative attitudes regarding obesity are widespread, socially acceptable, and develop as early as three years of age (Falkner et al., 1999; Puhl & Brownell, 2003a).

Well controlled, comprehensive weight loss programs often achieve substantial weight loss results with low rates of attrition. However weight maintenance has been a significant problem in the literature. Typically, half the weight lost is regained in the first year following treatment, and by 3-5 years posttreatment, 80% of patients have returned to or exceeded their pretreatment weight (Perri, 1998; Wadden et al., 1989; Wing, 1998).

Jason Lillis

ACT-Related Research on Health Problems

ACT-Related Research on Health Problems

The pages below list published ACT-related research studies for specific health problems that are available on the website as of July 2008. Empirical studies listed include ACT outcome studies, case studies, correlational research and micro/component studies. The literature is moving quickly and it takes a while to update pages like this. For a more detailed list of outcome studies and other empirical research you can download the "ACT Handout" and/or check the research summaries posted on the website, which are updated more regularly.

Update in Aug 2016: a new meta-analysis is useful in many of these areas: Graham, C. D., Gouick, J., Krahé, C., & Gillanders, D. (2016). A systematic review of the use of Acceptance and Commitment Therapy (ACT) in chronic disease and long-term conditions. Clinical Psychology Review, 46, 46–58. doi:10.1016/j.cpr.2016.04.009

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Cancer Research

Cancer Research
Outcome Studies: Coping with Cancer
  • Páez, M., Luciano, M. C., & Gutiérrez, O. (2007). Tratamiento psicológico para el afrontamiento del cáncer de mama. Estudio comparativo entre estrategias de aceptación y de control cognitivo. [Psychological treatment for breast cancer. Comparison between acceptance based and cognitive control based strategies] Psicooncología, 4, 75–95.
  • Branstetter, A. D., Wilson, K. G., Hildebrandt, M., & Mutch, D. (2004). Improving psychological adjustment among cancer patients: ACT and CBT. Paper presented at the Association for Advancement of Behavior Therapy, New Orleans.
    Large randomized trial showing that ACT is more helpful than traditional CBT in dealing with end stage cancer and works through a different process. Amazing data.
Case Studies: Coping with Cancer
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Chronic Pain Research

Chronic Pain Research

Outcome Studies: Chronic Pain

  • Vowles, K. E., & McCracken, L. M. (2008). Acceptance and values-based action in chronic pain: A study of treatment effectiveness and process. Journal of Consulting and Clinical Psychology, 76, 397-407.
  • Wicksell, R.K., Ahlqvist, J., Bring, A., Melin, L. & Olsson, G.L. (2008). Can exposure and acceptance strategies improve functioning and life satisfaction in people with chronic pain and whiplash-associated disorders (WAD)? A randomized controlled trial. Cognitive Behaviour Therapy
    Included people (adults) with longstanding pain due to whiplash (WAD). A 10-session protocol was compared with a wait list control group, and found significant improvements following treatment in functioning and life satisfaction, as well as in psychological flexibility (as measured with PIPS).
  • Wicksell R.K, Melin, L. & Olsson, G.L. (2007). Exposure and acceptance in the rehabilitation of children and adolescents with chronic pain.European Journal of Pain, 11, 267-274.
    Open trial with 14 adolescents. Good outcomes that continue to improve through follow up.
  • McCracken, L. M., Vowles, K. E., & Eccleston, C. (2005). Acceptance-based treatment for persons with complex, long standing chronic pain: A preliminary analysis of treatment outcome in comparison to a waiting phase. Behaviour Research and Therapy, 43, 1335-1346.
    108 chronic pain patients with a long history of treatment are followed through an ACT-based 3-4 week residential treatment program. Measures improved from initial assessment to pre-treatment on average only 3% (average of 3.9 month wait), but improved on average 34% following treatment. 81% of these gains were retained through a 3 month follow up. Changes in acceptance predicted positive changes in depression, pain related anxiety, physical disability, psychosocial disability, and the ability to stand. Positive outcomes were also seen in a timed walk, decreased medical visits, daily rest due to pain, pain intensity, and decreased pain medication use.
  • Dahl, J., Wilson, K. G., & Nilsson, A. (2004). Acceptance and Commitment Therapy and the treatment of persons at risk for long-term disability resulting from stress and pain symptoms: A preliminary randomized trial. Behavior Therapy, 35, 785-802.
    A small randomized controlled trial shows that a four hour ACT intervention reduced sick day usage by 91% over the next six months compared to treatment as usual in a group of chronic pain patients at risk for going on to permanent disability.

Mediation Analyses

Case Studies: Chronic Pain

  • Kleen, M., & Jaspers, J. P. C. (2007). Women should not be allowed to run. Acceptance and commitment therapy (ACT) with a pain disorder. Translated from: Vrouwen horen niet hard te lopen. Acceptance and commitment therapy (ACT) bij een pijnstoornis. Gedragstherapie, 40, 7-26.
  • Wicksell, R. K., Dahl, J., Magnusson, B., & Olsson, G. L. (2005). Using Acceptance and Commitment Therapy in the rehabilitation of an adolescent female with chronic pain: A case example. Cognitive and Behavioral Practice, 12, 415-423. Shows dramatic improvement with a 14 year old chronic pain patient using a values focused ACT protocol.

Micro/Component Studies: Chronic Pain

  • A number of other micro/component studies have examined the impact of brief ACT interventions on performance in pain inducing preparations and are listed here.

Correlational Studies: Chronic Pain

  • McCracken, L. M., & Vowles, K. E. (2007). Psychological flexibility and traditional pain management strategies in relation to patient functioning with chronic pain: An examination of a revised instrument.Journal of Pain, 8, 339-349.
  • McCracken, L. M. (2006). Toward a fully functional, flexible, and defused approach to pain in young people. Cognitive and Behavioral Practice, 13, 182-184.
  • McCracken, L. M., & Eccleston, C. (2006). A comparison of the relative utility of coping and acceptance-based measures in a sample of chronic pain sufferers. European Journal of Pain, 10(1), 23-29.
  • McCracken, L. M. (2005). Social context and acceptance of chronic pain: The role of solicitous and punishing responses. Pain, 113, 155-159.
  • McCracken, L. M. (1999). Behavioral constituents of chronic pain acceptance: Results from factor analysis of the Chronic Pain Acceptance Questionnaire. Journal of Back & Musculoskeletal Rehabilitation, 13, 93-100.
  • McCracken, L. M. (1998). Learning to live with the pain: acceptance of pain predicts adjustment in persons with chronic pain. Pain, 74, 21-27.
    This study is based on a pain related early version of the AAQ. Greater acceptance of pain was associated with reports of lower pain intensity, less pain-related anxiety and avoidance, less depression, less physical and psychosocial disability, more daily uptime, and better work status. A relatively low correlation between acceptance and pain intensity showed that acceptance is not simply a function of having a low level of pain. Regression analyses showed that acceptance of pain predicted better adjustment on all other measures of patient function, independent of perceived pain intensity. This work is replicated, refined and extended in McCracken, L. M. & Eccleston, C. (2003). Coping or acceptance: What to do about chronic pain. Pain, 105, 197-204. and McCracken, L. M. , Vowles, K. E., & Eccleston, C. (2004). Acceptance of chronic pain: Component analysis and a revised assessment method. Pain, 107, 159-166.
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Epilepsy Research

Epilepsy Research

Outcome Studies: Epilepsy

  • Lundgren, A. T., Dahl, J., Melin, L., & Kies, B. (2006). Evaluation of Acceptance and Commitment Therapy for drug refractory epilepsy: A randomized controlled trial in South Africa. Epilepsia, 47, 2173-2179.
    RCT with 27 drug resistant epileptics comparing 9 hours of ACT – individual and group -- to supportive therapy. Reduction of seizures to near zero level; maintenance for a year. Quality of life improves continuously through the follow up. Mediational analyses fit the ACT model and are described in more detail in Lundgren, T., Dahl, J., & Hayes, S. C. (2008). Evaluation of mediators of change in the treatment of epilepsy with Acceptance and Commitment Therapy. Journal of Behavior Medicine, 31(3), 225-235.
  • Lundgren, A. T. (2004). Development and evaluation of an integrative health model in the treatment of epilepsy: Two randomized controlled trials investigating the effects of a short term ACT intervention, yoga, and attention control therapy in India and South Africa. Unpublished thesis, University of Uppsala, Uppsala, Sweden.
    Two small RCTs (N = 18; and N = 28) comparing a three session ACT protocol (two individual; one group) to two other conditions. As compared to yoga, significantly reduced seizures in the ACT condition; as compared to attention control, significantly reduced seizures and experiential avoidance, and significantly increased quality of life in the ACT condition at a one year follow up.
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Other Health-Related Research

Other Health-Related Research

Outcome Studies: Diabetes Management

  • Gregg, J. A., Callaghan, G. M., Hayes, S. C., & Glenn-Lawson, J. L. (2007). Improving diabetes self-management through acceptance, mindfulness, and values: A randomized controlled trial. Journal of Consulting and Clinical Psychology, 75(2), 336-343.
    RCT showing that ACT + patient education is significantly better than patient education alone in producing good self-management and better blood glucose levels in lower SES patients with Type II diabetes. Effects at follow up are mediated by changes in self-management and greater psychological flexibility with regard to diabetes related thoughts and feelings.

Outcome Studies: High-Risk Sexual Behavior

  • Metzler, C. W., Biglan, A., Noell, J., Ary, D., & Ochs, L. (2000). A randomized controlled trial of a behavioral intervention to reduce high-risk sexual behavior among adolescents in STD clinics. Behavior Therapy, 31, 27-54.
    Components from ACT were included as component of a successful program to reduce high risk sexual behavior in adolescents.

Case Studies: Athletic Performance

  • Gardner, F. L. & Moore, Z.E. (2004). A mindfulness-acceptance-commitment based approach to athletic performance enhancement: Theoretical considerations. Behavior Therapy, 35, 707-724.
    Case study. An ACT protocol with an emphasis on mindfulness helps with sports outcomes.

Case Studies: Erectile Dysfunction

  • Montesinos, F. (2003). ACT, sexual desire orientation and erectile dysfunction. A case study. Analisis y Modificación de Conducta, 29, 291-320.
    A successful application of ACT to a 30-year-old male with difficulties in accepting his bisexual orientation and with an erectile dysfunction is presented.
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Smoking Research

Smoking Research

Outcome Studies: Smoking

  • Rosenqvist, D. & Sand, J. (2006). Mindfulness based smoking cessation for groups - an explorative study. Thesis at the Lund University, Sweden.
    6 acceptance and mindfulness group sessions during 35 days including individual homework assignments. 8 of 10 participants completed the program. At 1 mo follow up 50 percent (of 8 completers) were non-smokers, and the rest showed a decrease in smoking at a rate between 45 and 75 percent. Increase of the acceptance aspect of mindfulness was correlated with non-smoking.
  • Gifford, E. V., Kohlenberg, B. S., Hayes, S. C., Antonuccio, D. O., Piasecki, M. M.., Rasmussen-Hall, M. L., & Palm, K. M. (2004). Acceptance theory-based treatment for smoking cessation: An initial trial of Acceptance and Commitment Therapy. Behavior Therapy, 35, 689-705.
    Medium sized randomized controlled trial comparing ACT to nicotine replacement therapy (NRT) as a method of smoking cessation. Quit rates were similar at post but at a one-year follow-up the two groups differed significantly. The ACT group had maintained their gains (35% quit rates) while the NRT quit rates had fallen (less than 10%). Mediational analyses shows that ACT works through acceptance and response flexibility.
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Stress and Burnout Research

Stress and Burnout Research

Outcome Studies: Stress and Burnout

As small study examining whether a group consultation including elements of Acceptance and Commitment Therapy improved adoption compared to a standard 1-day continuing education workshop on Group Drug Counseling (GDC). The group consultation appeared to result in greater adoption as well as greater sense of personal accomplishment ( a burnout subscale). 

  • Blackledge, J. T., & Hayes, S. C. (2006). Using Acceptance and Commitment Training in the Support of Parents of Children Diagnosed with Autism. Child & Family Behavior Therapy, 28(1), 1-18.
    Pre – post study shows that ACT workshop helps parents cope with the stress of raising autistic children.
  • Bond, F. W. & Bunce, D. (2000). Mediators of change in emotion-focused and problem-focused worksite stress management interventions. Journal of Occupational Health Psychology, 5, 156-163.
    Randomized controlled trial. Shows that ACT is more effective than a previously empirically supported behavioral approach to reducing worksite stress and anxiety, and that both are better than a wait list control.

Correlational Studies: Stress and Burnout

  • Bond, F. W., & Flaxman, P. E. (2006). The Ability of Psychological Flexibility and Job Control to Predict Learning, Job Performance, and Mental Health. Journal of Organizational Behavior Management, 26, 113-130.
  • Donaldson, E. & Bond, F.W. (2004). Psychological acceptance and emotional intelligence in relation to workplace well-being. British Journal of Guidance and Counselling, 32, 187-203.
    Study compared experiential avoidance (as measures by the AAQ) and emotional intelligence in terms of their ability to predict general mental health, physical well-being, and job satisfaction in workers (controlling for the effects of job control since this work organisation variable is consistently associated with occupational health and performance). Results from 290 United Kingdom workers showed that emotional intelligence did not significantly predict any of the well-being outcomes, after accounting for acceptance and job control. Acceptance predicted general mental health and physical well-being but not job satisfaction, Job control was associated with job satisfaction, only. Not controlling one’s thoughts and feelings (as advocated by acceptance) may have greater benefits for mental well-being than attempting consciously to regulate them (as emotional intelligence suggests).
  • Bond, F. W. & Bunce, D. (2003). The role of acceptance and job control in mental health, job satisfaction, and work performance. Journal of Applied Psychology, 88, 1057-1067.
    Shows that AAQ predicts positive work outcomes (mental health, satisfaction, performance) even one year later, especially in combination with job control. Re-factors the AAQ and shows that a two factor solution can work on a slightly different 16 item version.
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Weight Maintenance Research

Weight Maintenance Research

Outcome Studies: Weight Maintenance

Micro/Component Studies: Weight Maintenance Outcome Studies: Weight Maintenance

  • Lillis, J. (2008). Acceptance and Commitment Therapy for the treatment of obesity-related stigma and sustained weight loss. Unpublished doctoral dissertation. University of Nevada, Reno.

Micro/Component Studies: Weight Maintenance

  • Forman, E.M., Hoffman, K.L., McGrath, K.B., Herbert, J.D., Brandsma, L.L. & Lowe, M.R. (2007). A comparison of acceptance- and control-based strategies for coping with food cravings: An analog study. Behaviour Research and Therapy, 45, 2372-2386.
    98 participants with chocolate cravings were exposed to a CBT-based protocol and an ACT-based protocol or no instructions and required to carry chocolate with them of for two days. Those more impacted by food related cues ate less and had fewer cravings in the ACT condition.

Measurement Development: Weight Maintenance

  • Lillis, J., & Hayes, S. C. (2008). Measuring avoidance and inflexibility in weight related problems. International Journal of Behavior Consultation and Therapy, 4(4), 348-354.
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Articles Comparing ACT to CBT

Articles Comparing ACT to CBT

 

ACT has raised controversy in various wings of CBT, e.g.,

  • Hofmann, S. G. (2008). Acceptance and Commitment Therapy: New Wave or Morita Therapy? Clinical Psychology, Science and Practice, 5, 280-285.
  • Öst, L. G. (2008). Efficacy of the third wave of behavioral therapies: A systematic review and meta-analysis. Behaviour Research and Therapy, 46(3), 296-321

The relation of ACT to CBT was discussed in the earliest ACT writings. e.g.,

  • Hayes, S. C. (1987). A contextual approach to therapeutic change. In Jacobson, N. (Ed.), Psychotherapists in clinical practice: Cognitive and behavioral perspectives (pp. 327 387). New York: Guilford.

And these more specific criticisms are gradually being answered, e.g.,

  • Hayes, S. C. (2008). Climbing our hills: A beginning conversation on the comparison of ACT and traditional CBT. Clinical Psychology: Science and Practice, 5, 286-295.
  • Hayes, S. C. (2008). Avoiding the mistakes of the past. The Behavior Therapist. 29, 150-153.
  • Hayes, S. C., Levin, M., Plumb, J., Boulanger, J., & Pistorello, J. (2013). Acceptance and Commitment Therapy and contextual behavioral science: Examining the progress of a distinctive model of behavioral and cognitive therapy. Behavior Therapy, 44, 180–198. doi: 10.1016/j.beth.2009.08.002 PMCID: PMC3635495
  • Atkins, P. W. B., Ciarrochi, J., Gaudiano, B. A., Bricker, J. B., Donald, J., Rovner, G., Smout, M., Livheim, F., Lundgren, T., Hayes, S. C. (2017). Departing from the essential features of a high quality systematic review of psychotherapy: A Response to Öst (2014) and recommendations for improvement. Behaviour Research and Therapy, 97, 259-272. Doi: 10.1016/j.brat.2017.05.016

In the 1980’s Steve Hayes and colleagues did a series of studies which found that cognitive and social learning methods did not work via processes described by these theories. e.g.,

  • Harmon, T. M., Nelson, R. O., & Hayes, S. C. (1980). Self monitoring of mood versus activity by depressed clients. Journal of Consulting and Clinical Psychology, 48, 30 38.
  • Hayes, S. C., & Nelson, R. O. (1983). Similar reactivity produced by external cues and self monitoring. Behavior Modification, 7, 183 196.
  • Hayes, S. C., Rincover, A., & Volosin, D. (1980). Variables influencing the acquisition and maintenance of aggressive behavior: Modeling versus sensory reinforcement. Journal of Abnormal Psychology, 89, 245 262.
  • Hayes, S. C., & Wolf, M. R. (1984). Cues, consequences, and therapeutic talk: Effect of social context and coping statements on pain. Behaviour Research and Therapy, 22, 385-392.
  • Jarrett, R. B., & Nelson, R. O. (1987). Mechanisms of change in cognitive therapy of depression. Behavior Therapy, 18, 227-241.
  • Nelson, R. O., Hayes, S. C., Spong, R. T., Jarrett, R. B., & McKnight, D. L. (1983). Self reinforcement: Appealing misnomer or effective mechanism? Behaviour Research and Therapy, 21, 557 566.
  • Zettle, R. D., & Hayes, S. C. (1982). Rule governed behavior: A potential theoretical framework for cognitive behavior therapy. In P. C. Kendall (Ed.), Advances in cognitive behavioral research and therapy (pp. 73 118). New York: Academic.
  • Zettle, R. D., & Hayes, S. C. (1983). Effect of social context on the impact of coping self statements. Psychological Reports, 52, 391 401.
    ACT followed a whole set of studies that showed that cognitive methods worked because of contextual factors

There is a growing set of empirical articles comparing ACT with traditional BT and CBT methods. Virtually all have shown differences at the level of process, and some in outcome.

  • Lappalainen, R., Lehtonen, T., Skarp, E., Taubert, E., Ojanen, M., & Hayes, S. C. (2007). The impact of CBT and ACT models using psychology trainee therapists: A preliminary controlled effectiveness trial. Behavior Modification, 31, 488-511.

     

    Randomized controlled study in which 14 student therapists treat one client each from an ACT model or a traditional CBT model for 6-8 sessions following a 2 session functional analysis. Participants with any normal outpatient problem were included, mostly anxiety and depression. At post and at the 6 month follow up ACT clients are more improved on the SCL-90 and several other measures. Greater acceptance for ACT patients; great self-confidence for CBT patients. Both correlated with outcomes, but when partial correlations are calculated, only acceptance still relates to outcome.

     

  • Forman, E. M., Herbert, J. D., Moitra, E., Yeomans, P. D., & Geller, P. A. (2007). A randomized controlled effectiveness trial of Acceptance and Commitment Therapy and Cognitive Therapy for anxiety and depression. Behavior Modification, 31(6), 772-799.

     

    101 heterogeneous outpatients reporting moderate to severe levels of anxiety or depression were randomly assigned either to traditional CT or to ACT. 23 junior therapists were used. Participants receiving CT and ACT evidenced large and equivalent improvements in depression, anxiety, functioning difficulties, quality of life, life satisfaction and clinician-rated functioning. “Observing” and “describing” one’s experiences mediated outcomes for those in the CT group relative to those in the ACT group, whereas “experiential avoidance,” “acting with awareness” and “acceptance” mediated outcomes for those in the ACT group.

  • Zettle, R. D. & Hayes, S. C. (1986). Dysfunctional control by client verbal behavior: The context of reason giving. The Analysis of Verbal Behavior, 4, 30 38.

     

    Small controlled trial. Shows that ACT is more effective that cognitive therapy for depression when presented in an individual format, and that it works by a different process.

  • Zettle, R. D., & Rains, J. C. (1989). Group cognitive and contextual therapies in treatment of depression. Journal of Clinical Psychology, 45, 438 445.

     

    Small controlled trial. Shows that ACT is as effective as cognitive therapy for depression when presented in a group format, and that it works by a different process.

  • Bond, F. W. & Bunce, D. (2000). Mediators of change in emotion-focused and problem-focused worksite stress management interventions. Journal of Occupational Health Psychology, 5, 156-163.

     

    Randomized controlled trial. Shows that ACT is more effective than a previously empirically supported behavioral approach to reducing worksite stress and anxiety, and that both are better than a wait list control. Process analyses fit the model.

  • Zettle, R. D. (2003). Acceptance and commitment therapy (ACT) versus systematic desensitization in treatment of mathematics anxiety. The Psychological Record, 53, 197-215.

     

    Small randomized controlled trial shows that ACT is as good as systematic desensitization in reducing math anxiety, but works according to a different process. Systematic desensitization reduced trait anxiety more than did ACT. The study has been replicated with interesting results:

    Brown, L. A., Forman, E. M., Herbert, J. D., Hoffman, K. L., Yuen, E. K. and Goetter, E. M. (2011). A randomized controlled trial of acceptance-based behavior therapy and cognitive therapy for test anxiety: A pilot study. Behavior Modification, 35, 31-53. Very small RCT (N = 16) for test anxiety comparing ACT (with mindfulness elements) and Beck’s CT. Similar outcomes on self-reports but ACT participants did objectively better on test scores in school.

  • Forman, E. M., Hoffman, K. L., McGrath, K. B., Herbert, J. D., Brandsma, L. L., & Lowe, M. R. (2007). A comparison of acceptance- and control-based strategies for coping with food cravings: An analog study.Behaviour Research and Therapy, 45, 2372-2386.

     

    98 participants with chocolate cravings were exposed to a well known CBT-based protocol (Kelly Brownell’s LEARN program) and an ACT-based protocol or no instructions and required to carry chocolate with them of for two days. Those more impacted by food related cues ate less and had fewer cravings in the ACT condition.

  • Masedo, A. I. & Esteve. M. R. (2006). Effects of suppression, acceptance and spontaneous coping on pain tolerance, pain intensity and distress. Behaviour Research and Therapy, 45, 199-209.

     

    A large and well-controlled randomized study that replicated Hayes, Bissett, Korn, Zettle, Rosenfarb, Cooper, & Grundt, 1999. Acceptance methods drawn from the 1999 ACT book and from the Hayes et al. 1999 pain study (the methods used included an acceptance rationale, practicing awareness of experience, the “Passengers on the Bus” exercise, and the ‘Two Scales Metaphor’) increased pain tolerance and decreased pain ratings in a cold pressor task as compared both to suppression methods (based on thought stopping) and to participants preferred method of coping (which tended to include distraction, relaxation, and keeping the hand still). The latter two conditions did not differ from each other in the main analysis.

    Wetherell, J. L., Afari, N., Rutledge, T., Sorrell, J. T., Stoddard, J. A., Petkus, A. J., Solomon, B. C., Lehman, D. H., Liu, L., Lang, A. J., Hampton Atkinson, J. (2011). A randomized, controlled trial of acceptance and commitment therapy and cognitive-behavioral therapy for chronic pain. Pain, 152, 2098-2107. DOI: 10.1016/j.pain.2011.05.016 RCT (N=114) comparing ACT and traditional CBT for chronic pain. Good outcomes over 6 months. No differences in outcomes. Treatment completers were more satisfied with ACT.

     

    Thorsell, J., Finnes, A., Dahl, J., Lundgren, T., Gybrant, M., Gordh, T., & Buhrman, M. (2011). A comparative study of 2 manual-based self-help interventions, Acceptance and Commitment Therapy and Applied Relaxation, for persons with chronic pain. The Clinical Journal of Pain, 27, 716-723. doi: 10.1097/AJP.0b013e318219a933. RCT (N = 90) of ACT versus applied relaxation using a combination of an initial face to face session, a 7 week self-help manual with weekly therapist telephone support, and a concluding face-to-face session. 6 and 12 mo follow up. Better outcomes for ACT in level of function, pain intensity, acceptance, and marginal life satisfaction. Depression and anxiety improved but no diff between conditions.

     

    Rost, A. D., Wilson, K. G., Buchanan, E., Hildebrandt, M.J., & Mutch, D. (in press). Improving psychological adjustment among late-stage ovarian cancer patients: Examining the role of avoidance in treatment. Cognitive and Behavioral Practice. RCT (N = 31; 47 originally but the rest died or entered hospice care) comparing ACT and traditional CBT approaches to women coping with end-stage gynecological cancer. Nice outcomes; dominantly in favor of ACT. By the way CBT is labeled "TAU" -- you have to look at the list of procedures to see that it was CBT.

     

    Arch, J., Eifert, G. H., Davies, C., Vilardaga, J. P., Rose, R. D., & Craske, M. G. (in press). Randomized clinical trial of cognitive behavioral therapy (CBT) versus acceptance and commitment therapy (ACT) for mixed anxiety disorders. Journal of Consulting and Clinical Psychology. RCT (N = 128; 52% female; 33% minority) of 12 sessions of ACT v. tradition CBT for heterogeneous anxiety disorders; both including behavioral exposure. Similar outcomes in several areas through 12 mo F-up but on the primary outcome measure -- blind clinical interviews on the clinical severity of anxiety problems using the ADIS interview -- ACT participants improve more in clinical severity from post to follow up than CBT (it is a very large effect: d = 1.33) and among completers their end-state clinical severity ratings were much better (d = 1.03). Better improvement for ACT in psychological flexibility (medium effect for completers: d = .59) for ACT; better quality of life at follow up (small effect: d = .43) for CBT. 

     

There are also studies showing that ACT methods can empower traditional behavioral methods, e.g.,

More recently studies have explained the effect of some cognitive variables in ACT terms, e.g.,

Some of the history of ACT, including its relation to CBT writ large, can be found in:

  • Zettle, R. D. (2005). The evolution of a contextual approach to therapy: From Comprehensive Distancing to ACT. International Journal of Behavioral Consultation and Therapy, 1(2), 77-89.
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Changing Cultural Practices

Changing Cultural Practices

Part of the ACT/ RFT movement is a "grand vision" to affect positive change on the culture more generally. Groups and organizations engage in practices that harm individuals, families, and the environment, yet there is little scientific understanding of how to bring about changes in these practices.

A number of professionals throughout the world are conducting research on such topics as stigma, prejudice, prevention, advertising, child rearing, and environmental preservation among other important issues.

Here is where you will find information on specific applications of ACT to cultural issues with links to relevant researchers and studies.

Jason Lillis

ACT/ RFT and Prejudice

ACT/ RFT and Prejudice

Despite decades of social concern, racial, ethnic, and religious prejudice persists. Few cultural issues seem more important than figuring out why people hate and how to reduce discriminatory and violent behavior due to prejudice. It seems our survival may depend on our ability as human beings to solve this issue. ACT/ RFT is relevant not just to the needs of the victims of prejudice, discrimination, and terrorism, but also to the understanding and modification of psychological processes that lead to the perpetration of hateful and discriminatory acts.

From an ACT/ RFT perspective, prejudice can be defined as theobjectification and dehumanization of human beings because of their participation in verbal evaluative categories. Prejudice, defined this way, is a kind of verbal entanglement. It is difficult to avoid because some of the same cognitive processes that permit problem-solving also seem to foster prejudice. In addition, may of the things humans do to try and change or eliminate prejudice are either inert or prone to making these processes more resistant to change. Indeed, validated methods for reducing prejudice are very limited.

In this section are links to various ACT and RFT papers related to this topic.

Conceptual papers discussing prejudice/terrorism from an ACT/RFT perspective.

RFT studies related to prejudice and stereotyping

Empirical papers examining the impact of ACT on prejudice and stigma.

  • Self related stigma regarding weight: Lillis, J. (2008). Acceptance and Commitment Therapy for the treatment of obesity-related stigma and sustained weight loss. Unpublished doctoral dissertation. University of Nevada, Reno.
  • Prejudice towards ethnic minorities: Lillis, J., & Hayes, S. C. (2007). Applying acceptance, mindfulness, and values to the reduction of prejudice: A pilot study. Behavior Modification, 31(4), 389-411.
    Undergraduates enrolled in two separate classes on racial differences were exposed Acceptance and Commitment Therapy and an educational lecture drawn from a textbook on the psychology of racial differences in a counterbalanced order. Results indicate that only the ACT intervention was effective in increasing positive behavioral intentions at post and a 1-week follow-up. These changes were associated with other self-reported changes that fit with the ACT model.
  • Stigma towards mental health problems: Masuda, A., Hayes, S. C., Fletcher, L. B., Seignourel, P. J., Bunting, K., Herbst, S. A., Twohig, M. P., & Lillis, J. (2007). The impact of Acceptance and Commitment Therapy versus education on stigma toward people with psychological disorders. Behaviour Research and Therapy, 45(11), 2764-2772.
    An RCT comparing ACT and education in 95 college students. ACT reduced mental health stigma significantly regardless of participants’ pre-treatment levels of psychological flexibility, but education reduced stigma only among participants who were relatively flexible and non-avoidant to begin with.
Jason Lillis

Empirical Studies

Empirical Studies

This page was last updated in 2014. For up-to-date information, go to the ACT Randomized Controlled Trials page, the State of the ACT Evidence page, and the Publications section.


The subsections divide the empirical ACT literature into several categories. If you have a study that should be added you can upload the actual publication into the publications section (login to your member account then go here to add a publication to the site).

You can't add the reference to the publication here directly, you have to email that information to the site editor and we will add it ... but if the publication itself is already uploaded we can link the reference here to that file so that people can find it and download it.

You can find outcome studies (Randomized Controlled Trials, RCTs) here.

Steven Hayes

Case Studies

Case Studies

 

Case Studies by Year (Controlled Time Series Studies are covered in the RCT page)

In Press

  • Twohig, M. P. (In Press). Acceptance and Commitment Therapy for Treatment-Resistant Posttraumatic Stress Disorder: A Case Study.Cognitive and Behavioral Practice.

2008

2007

  • Kleen, M., & Jaspers, J. P. C. (2007). Women should not be allowed to run. Acceptance and commitment therapy (ACT) with a pain disorder. Translated from: Vrouwen horen niet hard te lopen. Acceptance and commitment therapy (ACT) bij een pijnstoornis. Gedragstherapie, 40, 7-26.

2006

  • García-Montes, J.M., Pérez-Álvarez, M. & Cangas-Díaz, A. (2006). Aproximación al abordaje clínico de los síntomas psicóticos desde la Aceptación. = Approaching clinical intervention for psychotic symptoms from an acceptance perspective . Apuntes de Psicología, 24(1-3), 293-307.
  • Ruiz-Jiménez, F. J. (2006). Aplicación de la Terapia de Aceptación y Compromiso (ACT) Para el Incremento del Rendimiento Ajedrecí¬stico. Un Estudio de Caso [Application of Acceptance and Commitment Therapy (ACT) to Improve Chess-players Performance. A Case Study.International Journal of Psychology and Psychological Therapy, 6, 77-97.

2005

  • Batten, S. V., & Hayes, S. C. (2005). Acceptance and Commitment Therapy in the Treatment of Comorbid Substance Abuse and Post-Traumatic Stress Disorder: A Case Study. Clinical Case Studies, 4(3), 246-262.
    Case study. Shows improvement with a dually diagnosed patient.
  • Olivencia, J. J., & Díaz, A. J. C. (2005). Tratamiento psicológico del trastorno esquizotípico de la personalidad. Un estudio de caso. (Psychological treatment of schizotypal personality disorder. A case study). Psicothema, 17, 412-417.
    A case study that examines a combination of ACT and FAP in the successful treatment of a case of Schizotypal Personality Disorder.
  • Orsillo SM, Batten SV. (2005). Acceptance and commitment therapy in the treatment of posttraumatic stress disorder. Behavior Modification, 29, 95-129.
    Discussion article and case study showing how to apply ACT to the treatment of PTSD.
  • Wicksell, R. K., Dahl, J., Magnusson, B., & Olsson, G. L. (2005). Using Acceptance and Commitment Therapy in the rehabilitation of an adolescent female with chronic pain: A case example. Cognitive and Behavioral Practice, 12, 415-423. Shows dramatic improvement with a 14 year old chronic pain patient using a values focused ACT protocol.

2004

  • Gardner, F. L. & Moore, Z.E. (2004). A mindfulness-acceptance-commitment based approach to athletic performance enhancement: Theoretical considerations. Behavior Therapy, 35, 707-724.
    Case study. An ACT protocol with an emphasis on mindfulness helps with sports outcomes.

2003

  • Heffner, M., Eifert, G. H., Parker, B. T., Hernandez, D. H. and Sperry, J. A. (2003). Valued directions: Acceptance and Commitment Therapy in the treatment of alcohol dependence. Cognitive and Behavioral Practice, 10, 378-38.
    This case study describes a heavily values focused ACT treatment of a case of alcohol dependence within an Acceptance and Commitment Therapy model. Identifying valued directions seemed to help the client achieve sobriety and put a plan into action to "start living."
  • Montesinos, F. (2003). ACT, sexual desire orientation and erectile dysfunction. A case study. Analisis y Modificación de Conducta, 29, 291-320.
    A successful application of ACT to a 30-year-old male with difficulties in accepting his bisexual orientation and with an erectile dysfunction is presented.
  • Pankey, J. & Hayes, S. C. (2003). Acceptance and Commitment Therapy for psychosis. International Journal of Psychology and Psychological Therapy, 3, 311-328.
    Case study with a retarded psychotic person experiencing command hallucinations and multiple delusions. Believability drops dramatically over treatment but not frequency. Good functional improvement.

2002

  • Heffner, M., Sperry, J., Eifert, G. H. & Detweiler, M. (2002). Acceptance and Commitment Therapy in the treatment of an adolescent female with anorexia nervosa: A case example. Cognitive and Behavioral Practice, 9, 232-236.
    Describes the use of ACT in anorexia and shows resulting data. Case study. The case study is followed by discussion articles:
    • Wilson, K. G. & Roberts, M. (2002). Core principles in Acceptance and Commitment Therapy: An application to anorexia. Cognitive and Behavioral Practice, 9, 237-243.
    • Hayes, S. C. & Pankey, J. (2002). Experiential avoidance, cognitive fusion, and an ACT approach to anorexia nervosa. Cognitive and Behavioral Practice, 9, 243-247.
    • Orsillo, S. M. & Batten, S. J. (2002). ACT as treatment of a disorder of excessive control: Anorexia. Cognitive and Behavioral Practice, 9, 253-259.
    • There is also a cognitive paper that is nominally a response to the case, but it mentions ACT only in passing, focusing instead on the traditional CBT model.
  • López, S. & Arco, J.L. (2002). ACT como alternativa terapéutica a pacientes que no responden a tratamientos tradicionales: un estudio de caso [ACT as an alternative for patients that do not respond to traditional treatments: A case study]. Análisis y Modificación de Conducta, 120, 585-616.
    Presents data on ACT with a patient who failed a course of cognitive therapy.

2001

  • García, J.M. & Pérez, M. (2001). ACT as a treatment for psychotic symptoms. The case of auditory hallucinations. Análisis y Modificación de Conducta, 27, 113, 455-472.
    Describes the use of ACT in the treatment of psychotic disorders and shows resulting data. Case study.
  • Luciano, C. (2001). On the Experiential Avoidance Disorder and Acceptance and Commitment Therapy (ACT). Análisis y Modificación de Conducta, 27, 113, 317-332. A case study on ACT.
  • Luciano, C. (2001) (Ed.), Terapia de Aceptación y Compromiso (ACT) y el Traastorno de Evitación Experiencial. Un síntesis de casos clínicos. (Ed.) Valencia: Promolibro.
  • Luciano, C. & Cabello, F. (2001). Bereavement and Acceptance and Commitment Therapy (ACT). Análisis y Modificación de Conducta, 27, 113, 399-424.
    Describes the use of ACT in the treatment of complicated bereavement and shows resulting data. Case study.
  • Luciano, C., & Gutierrez, O. (2001). Anxiety and Acceptance and Commitment Therapy (ACT). Análisis y Modificación de Conducta, 27, 113, 373-398.
    Describes the use of ACT in the treatment of anxiety problems and shows resulting data. Case study.
  • Zaldívar, F. & Hernández, M. (2001). Acceptance and Commitment Therapy (ACT): Application to an experiential avoidance with agoraphobic form. Análisis y Modificación de Conducta, 27, 113, 425-454.
    Describes the use of ACT in the treatment of agoraphobia and shows resulting data. Case study.

2000

  • Carrascoso López, F. J. (2000). Acceptance and Commitment Therapy (ACT) in Panic Disorder with Agoraphobia: A Case Study. Psychology in Spain, 4(1), 120-128.
  • Garcia, R. F. (2000). Application of acceptance and commitment therapy in an example of experiential avoidance. Psicothema, 12, 445-450.

1999 and Earlier (First ACT Book Appears in 1999)

  • Biglan, A. (1989). A contextual approach to the clinical treatment of parental distress. In G. H. S. Singer & L. K. Irvin (Eds.), Support for caregiving families: Enabling positive adaptation to disability (pp. 299-311). Baltimore, MD: Brookes.
    Uncontrolled. Presents case data on the use of ACT components with families.
  • Hayes, S. C. (1987). A contextual approach to therapeutic change. In N. Jacobson (Ed.), Psychotherapists in clinical practice: Cognitive and behavioral perspectives (pp. 327-387). New York: Guilford Press.
    Shows a series of uncontrolled case evaluations on ACT with anxiety problems.
Steven Hayes

Correlational studies

Correlational studies

Correlational studies on ACT-Related Processes by Year

See also the experimental psychopathology page

In Press

2009

2008

  • Boelen, P.A. & Reijntjes, A. (2008). Measuring experiential avoidance: Reliability and validity of the Dutch 9-item acceptance and action questionnaire (AAQ). Journal of Psychopathology and Behavioral Assessment, 30, 241-251.
  • Kashdan, T. B., & Breen, W. E. (2008). Social anxiety and positive emotions: A prospective examination of a self-regulatory model with tendencies to suppress or express emotions as a moderating variable. Behavior Therapy, 39, 1-12.
  • Leonard, L. M., Iverson, K. M. & Follette, V. M. (2008). Sexual functioning and sexual satisfaction among women who report a history of childhood and/or adolescent sexual abuse. Journal of Sex & Marital Therapy, 34, 375-384.
  • McCracken, L. M. & Yang, S. (2008). A Contextual Cognitive-Behavioral Analysis of Rehabilitation Workers’ Health and Well-Being: Influences of Acceptance, Mindfulness, and Values-Based Action. Rehabilitation Psychology, 53(4), 479-485.
  • Ostafin, B. D. & Marlatt, G. A. (2008). Surfing the urge: Experiential acceptance moderates the relation between automatic alcohol motivation and hazardous drinking. Journal of Social and Clinical Psychology, 27(4), 404-418.
  • Tull, M.T. & Gratz, K.L. (2008). Further examination of the relationship between anxiety sensitivity and depression: The mediating role of experiential avoidance and difficulties engaging in goal-directed behavior when distressed. Journal of Anxiety Disorders, 22(2), 199-210.
  • Tull, M.T., Rodman, S.A. & Roemer, L. (2008). An examination of the fear of bodily sensations and body hypervigilance as predictors of emotion regulation difficulties among individuals with a recent history of uncued panic attacks. Journal of Anxiety Disorders, 22(4), 750-760.

2007

  • Andrew, D.H. & Dulin, P.L. (2007). The relationship between self-reported health and mental health problems among older adults in New Zealand: Experiential avoidance as a moderator. Aging and mental health, 11(5), 596-603.
  • Butler, J., & Ciarrochi, J. (2007). Psychological Acceptance and Quality of Life in the Elderly. Quality of Life Research, 16, 607-615.
    In a sample of 187 elderly those higher in psychological acceptance had higher quality of life in the areas of health, safety, community participation and emotional well-being; and had less adverse psychological reactions to decreasing productivity.
  • Chapman, A. L. & Cellucci, T. (2007). The role of antisocial and borderline personality features in substance dependence among incarcerated females. Addictive Behaviors, 32, 1131-1145.
  • Gold, S.D., Marx, B.P. & Lexington, J.M. (2007). Gay male sexual assault survivors: The relations among internalized homophobia, experiential avoidance, and psychological symptom severity. Behaviour Research and Therapy, 45(3), 549-562.
  • Kashdan, T. B., & Breen, W. E. (2007). Materialism and diminished well-being: Experiential avoidance as a mediating mechanism. Journal of Social and Clinical Psychology, 26, 521-539.
    This correlational study examined the hypothesis that experiential avoidance mediates associations between excessively materialistic values and diminished emotional well-being, meaning in life, self-determination, and gratitude. Results indicated that people with high materialistic values reported more negative emotions and less relatedness, autonomy, competence, gratitude, positive emotions, and sense of meaning – all of these relations were mediated by experiential avoidance mediated all of these relations. Emotional disturbances such as social anxiety and depressive symptoms failed to account for these findings after accounting for shared variance with experiential avoidance.
  • McCracken, L. M., & Vowles, K. E. (2007). Psychological flexibility and traditional pain management strategies in relation to patient functioning with chronic pain: An examination of a revised instrument. Journal of Pain, 8, 339-349.
  • Morina, N. (2007). The role of experiential avoidance in psychological functioning after war-related stress in Kosovar civilians. Journal of Nervous and Mental Disease, 195(8), 697-700.
  • Norberg, M. M., Wetterneck, C. T., Woods, D. W., & Conelea, C. A. (2007). Examination of the mediating role of psychological acceptance in relationships between cognitions and severity of chronic hairpulling. Behavior Modification, 31, 367 – 381.
    Correlational study with 730+ folks suffering from trichotillomania. Experiential avoidance as measured by the AAQ fully mediated the rela¬tionship between hair-pulling and both fears of negative evaluation and feelings of shame and partially mediated the relationship between hair-pulling severity and dysfunctional beliefs about appearance.
  • Tull, M.T., Jakupcak, M. & Paulson, A. (2007). The role of emotional inexpressivity and experiential avoidance in the relationship between posttraumatic stress disorder symptom severity and aggressive behavior among men exposed to interpersonal violence. Anxiety, Stress & Coping: An International Journal, 20(4), 337-351.
  • Tull, M. T., & Roemer, L. (2007). Emotion regulation difficulties associated with the experience of uncued panic attacks: Evidence of experiential avoidance, emotional nonacceptance, and decreased emotional clarity. Behavior Therapy, 38(4), 378-391.

2006

  • Bond, F. W., & Flaxman, P. E. (2006). The Ability of Psychological Flexibility and Job Control to Predict Learning, Job Performance, and Mental Health. Journal of Organizational Behavior Management, 26, 113-130.
  • Flessner, D. A., & Woods, D. W. (2006). Phenomenological characteristics, social problems, and the economic impact associated with chronic skin picking. Behavior Modification, 30, 944-963.
    Found that the impact of skin picking on depression and anxiety was partially mediated by the AAQ in a non-referred sample of chronic skin pickers.
  • Gaudiano, B. A., & Herbert, J. D. (2006). Believability of hallucinations as a potential mediator of their frequency and associated distress in psychotic inpatients. Behavioural and Cognitive Psychotherapy, 34, 497–502.
  • Kashdan, T.B., Barrios, V., Forsyth, J.P., & Steger, M.F. (2006). Experiential avoidance as a generalized psychological vulnerability: Comparisons with coping and emotion regulation strategies. Behaviour Research and Therapy, 44, 1301-1320.
    two studies, one correlational and one longitudinal, show that experiential avoidance as measured by the AAQ fully or partially mediated the relationships between coping and emotion regulation strategies on anxiety-related pathology, (Sutdy 1) and psychological distress and hedonic functioning over the course of a 21-day monitoring period (Study 2). The variables examined included maladaptive coping, emotional responses styles, and uncontrollability on anxiety-related distress (e.g., anxiety sensitivity, trait anxiety, suffocation fears, and body sensation fears), and suppression and cognitive reappraisal on daily negative and positive experiences. The data showed that cognitive reappraisal, a primary process of traditional cognitive-behavior therapy, was much less predictive of the quality of psychological experiences and events in everyday life compared with EA.
  • Kashdan, T. B., & Steger, M. (2006). Expanding the topography of social anxiety: An experience sampling assessment of positive emotions and events, and emotion suppression. Psychological Science, 17, 120-128.
    In a 21-day experience sampling study, dispositional social anxiety, emotional suppression, and cognitive reappraisal was compared daily measures of social anxiety. Socially anxious individuals reported the lowest rate of positive events on days when they were more socially anxious and tended to suppress emotions, and the highest rate of positive events on days when they were less socially anxious and more accepting of emotional experiences. Irrespective of dispositional social anxiety, participants reported the most intense positive emotions on days when they were less socially anxious and more accepting of emotional experiences.
  • McCracken, L. M. (2006). Toward a fully functional, flexible, and defused approach to pain in young people. Cognitive and Behavioral Practice, 13, 182-184.
  • Reddy, M.K., Pickett, S.M. & Orcutt, H.K. (2006). Experiential avoidance as a mediator in the relationship between childhood psychological abuse and current mental health symptoms in college students. Journal of Emotional Abuse, 6(1), 67-85.
  • Tull, M.T., Gratz, K.L., & Lacroce, D.M. (2006). The role of anxiety sensitivity and lack of emotional approach coping in depressive symptom severity among a non-clinical sample of uncued panickers. Cognitive Behaviour Therapy, 35(2), 74-87.

2005

  • Greco, L. A., Heffner, M., Ritchie, S., Polak, M., Poe, S., & Lynch, S. K., (2005). Maternal adjustment following preterm birth: Contributions of experiential avoidance. Behavior Therapy, 36, 177-184.
    Experiential avoidance as measured by the AAQ correlated positively with post-discharge parental stress and traumatic stress symptoms surrounding preterm birth. Moreover, it partially mediated the association between stress during delivery and later traumatic stress symptoms. This process was not moderated by parent reports of child temperament or perceived social support, suggesting that experiential avoidance plays a mediating role irrespective of child characteristics or perceived support from family members and close friends.
  • Marx, B.P. & Sloan, D.M. (2005). Experiential avoidance, peritraumatic dissociation, and post-traumatic stress disorder. Behaviour Research and Therapy, 43, 569-583.
    185 trauma survivors were assessed for peritraumatic dissociation, experiential avoidance (using the AAQ), and PTSD symptom severity. Both peritraumatic dissociation and experiential avoidance were significantly related to PTSD symptoms at baseline. After the initial levels of PTSD was taken into account, only experiential avoidance was related to PTSD symptoms both 4- and 8-weeks later.
  • McCracken, L. M. (2005). Social context and acceptance of chronic pain: The role of solicitous and punishing responses. Pain, 113, 155-159.
  • Orcutt, H. K., Pickett, S., & Pope, E. (2005). Experiential avoidance and forgiveness as mediators in the relation between traumatic life events and PTSD symptoms. Journal of Social and Clinical Psychology, 24, 1003–1029.
  • Roemer, L., Salters, K., Raffa, S. D., & Orsillo, S. M. (2005). Fear and avoidance of internal experiences in GAD: Preliminary tests of a conceptual model. Cognitive Therapy and Research, 29, 71-88.
    Correlational study. Shows that the AAQ is associated with GAD symptoms in both clinical and non-clinical populations.

2004

  • Begotka, A. M., Woods, D. W., & Wetterneck, C. T. (2004). The relationship between experiential avoidance and the severity of trichotillomania in a nonreferred sample. Journal of Behavior Therapy and Experimental Psychiatry, 35, 17-24.
    In a large sample of adults suffering from trichotillomania, experiential avoidance as measured by the 9 item AAQ correlated with more frequent and intense urges to pull, less ability to control urges, and more pulling-related distress than persons who were not experientially avoidant. Actual pulling did not differ.
  • Donaldson, E. & Bond, F.W. (2004). Psychological acceptance and emotional intelligence in relation to workplace well-being. British Journal of Guidance and Counselling, 32, 187-203.
    Study compared experiential avoidance (as measures by the AAQ) and emotional intelligence in terms of their ability to predict general mental health, physical well-being, and job satisfaction in workers (controlling for the effects of job control since this work organisation variable is consistently associated with occupational health and performance). Results from 290 United Kingdom workers showed that emotional intelligence did not significantly predict any of the well-being outcomes, after accounting for acceptance and job control. Acceptance predicted general mental health and physical well-being but not job satisfaction, Job control was associated with job satisfaction, only. Not controlling one’s thoughts and feelings (as advocated by acceptance) may have greater benefits for mental well-being than attempting consciously to regulate them (as emotional intelligence suggests).

The AAQ validation study. Over 2000 subjects. Validates both a 9 and 16 item version, both single factor.

  • Mairal, J. B. (2004). Spanish Adaptation of the Acceptance and Action Questionnaire (AAQ). International Journal of Psychology and Psychological Therapy, 4, 505-515.
  • Plumb, J. C., Orsillo, S. M., & Luterek, J. A. (2004). A preliminary test of the role of experiential avoidance in post-event functioning. Journal of Behavior Therapy and Experimental Psychiatry, 35, 245-257.
    Correlational study. Showed that experiential avoidance was correlated with post-traumatic symptomatology over and above other measures of psychological functioning.
  • Tull, M. T., Gratz, K. L., Salters, K., & Roemer, L. (2004). The role of experiential avoidance in posttraumatic stress symptoms and symptoms of depression, anxiety, and somatization. Journal of Nervous & Mental Disease, 192(11), 754-761.
    Correlational study. Among a sample of individuals exposed to multiple potentially traumatic events, general experiential avoidance (but not thought suppression in particular), predicted symptoms of depression, anxiety, and somatization when controlling for posttraumatic stress symptom severity. Thought suppression (but not experiential avoidance) was associated with severity of posttraumatic stress symptoms when controlling for their shared relationship with general psychiatric symptom severity.

2003

  • Bond, F. W. & Bunce, D. (2003). The role of acceptance and job control in mental health, job satisfaction, and work performance. Journal of Applied Psychology, 88, 1057-1067.
    Shows that AAQ predicts positive work outcomes (mental health, satisfaction, performance) even one year later, especially in combination with job control. Re-factors the AAQ and shows that a two factor solution can work on a slightly different 16 item version.
  • Forsyth, J. P., Parker, J. D., & Finlay, C. G. (2003). Anxiety sensitivity, controllability, and experiential avoidance and their relation to drug of choice and addiction severity in a residential sample of substance-abusing veterans. Addictive Behaviors, 28(5), 851-870.
  • Tull, M.T., & Roemer, L. (2003). Alternative explanations for emotional numbing of posttraumatic stress disorder: An examination of hyperarousal and experiential avoidance. Journal of Psychopathology and Behavioral Assessment, 25, 147-154.

2002

  • Marx, B. P. & Sloan, D. M. (2002). The role of emotion in the psychological functioning of adult survivors of childhood sexual abuse. Behavior Therapy, 33, 563-577.
    Correlational study showing that childhood sexual abuse (CSA), experiential avoidance and emotional expressivity were significantly related to psychological distress. However, only experiential avoidance mediated the relationship between CSA and current distress.

2001

  • Batten, S. V., Follette, V.M., & Aban, I (2001). Experiential Avoidance and high risk sexual behavior in survivors of child sexual abuse. Journal of Child Sexual Abuse, 10(2), 101-120.
    This is a correlational study (N = 283) showing that generalized experiential avoidance accounted for 67% of the variance in distress in a sexually abused population.

1999 and earlier

  • McCracken, L. M. (1999). Behavioral constituents of chronic pain acceptance: Results from factor analysis of the Chronic Pain Acceptance Questionnaire. Journal of Back & Musculoskeletal Rehabilitation, 13, 93-100.
  • McCracken, L. M. (1998). Learning to live with the pain: acceptance of pain predicts adjustment in persons with chronic pain. Pain, 74, 21-27.
    This study is based on a pain related early version of the AAQ. Greater acceptance of pain was associated with reports of lower pain intensity, less pain-related anxiety and avoidance, less depression, less physical and psychosocial disability, more daily uptime, and better work status. A relatively low correlation between acceptance and pain intensity showed that acceptance is not simply a function of having a low level of pain. Regression analyses showed that acceptance of pain predicted better adjustment on all other measures of patient function, independent of perceived pain intensity. This work is replicated, refined and extended in McCracken, L. M. & Eccleston, C. (2003). Coping or acceptance: What to do about chronic pain. Pain, 105, 197-204. and McCracken, L. M. , Vowles, K. E., & Eccleston, C. (2004). Acceptance of chronic pain: Component analysis and a revised assessment method. Pain, 107, 159-166.
Steven Hayes

Effectiveness Articles

Effectiveness Articles
  • Vowles, K. E., & McCracken, L. M. (2008). Acceptance and values-based action in chronic pain: A study of effectiveness and treatment process. Journal of Consulting and Clinical Psychology, 76, 397-407.

Participants included 171 completers of an interdisciplinary treatment program, 66.7% of whom completed a 3-month follow-up assessment as well. Results indicated significant improvements for pain, depression, pain-related anxiety, disability, medical visits, work status, and physical performance. Effect size statistics were uniformly medium or larger. According to reliable change analyses, 75.4% of patients demonstrated improvement in at least one key domain. Both acceptance of pain and values-based action improved, and increases in these processes were associated with improvements in the primary outcome domains.

101 heterogeneous outpatients reporting moderate to severe levels of anxiety or depression were randomly assigned either to traditional CT or to ACT. 23 junior therapists were used. Participants receiving CT and ACT evidenced large and equivalent improvements in depression, anxiety, functioning difficulties, quality of life, life satisfaction and clinician-rated functioning. “Observing” and “describing” one’s experiences mediated outcomes for those in the CT group relative to those in the ACT group, whereas “experiential avoidance,” “acting with awareness” and “acceptance” mediated outcomes for those in the ACT group.
Randomized controlled study in which 14 student therapists treat one client each from an ACT model or a traditional CBT model for 6-8 sessions following a 2 session functional analysis. Participants with any normal outpatient problem were included. At post and at the 6 month follow up ACT clients are more improved on the SCL-90 and several other measures. Greater acceptance for ACT patients; great self-confidence for CBT patients. Both correlated with outcomes, but when partial correlations are calculated, only acceptance still relates to outcome.
108 chronic pain patients with a long history of treatment are followed through an ACT-based 3-4 week residential treatment program. Measures improved from initial assessment to pre-treatment on average only 3% (average of 3.9 month wait), but improved on average 34% following treatment. 81% of these gains were retained through a 3 month follow up. Changes in acceptance predicted positive changes in depression, pain related anxiety, physical disability, psychosocial disability, and the ability to stand. Positive outcomes were also seen in a timed walk, decreased medical visits, daily rest due to pain, pain intensity, and decreased pain medication use.
Controlled effectiveness trial. Not randomized. Shows that training in ACT produces generally more effective clinicians, as measured by client outcomes.

Steven Hayes

Experimental Psychopathology and Component Studies

Experimental Psychopathology and Component Studies

Experimental Psychopathology and Component Studies by Year

Below is a list of experimental psychopathology and analogue studies testing components of ACT. 

2009

2008

  • Degen, L.M. (2008)Acceptance-based emotion regulation, perceptions of control, state mindfulness, anxiety sensitivity, and experiential avoidance: Predicting response to hyperventilation. Unpublished doctoral dissertation. American University.

2007

  • Cochrane, A., Barnes-Holmes, D., Barnes-Holmes, Y., Stewart, I., & Luciano, C. (2007). Experiential avoidance and aversive visual images: Response delays and event related potentials on a simple matching task. Behavior Research and Therapy, 45, 1379-1388.
    Two experiments. In Experiment 1, participants high (n = 15) or low in avoidance (n = 14), as measured by the Acceptance and Action Questionnaire, completed a simple matching task that required them to choose whether or not to look at an aversive visual image. Only the high-avoidance participants took longer to emit a correct response that produced an aversive rather than a neutral picture. Additionally, the high-avoiders reported greater levels of anxiety following the experiment even though they rated the aversive images as less unpleasant and less emotionally arousing than their low-avoidant counterparts. In Experiment 2, three groups, representing high- mid- and low-avoidance (n = 6 in each) repeated the matching task with the additional recording of event related potentials (ERPs). The findings replicated Experiment 1 but also showed that high-EA subjects had significantly greater negativity for electrodes over the left hemisphere relative to the midline suggesting that the high-EA group engaged in verbal strategies to regulate their emotional responses.
  • Forman, E.M., Hoffman, K.L., McGrath, K.B., Herbert, J.D., Brandsma, L.L. & Lowe, M.R. (2007). A comparison of acceptance- and control-based strategies for coping with food cravings: An analog study.Behaviour Research and Therapy, 45, 2372-2386.
    98 participants with chocolate cravings were exposed to a CBT-based protocol and an ACT-based protocol or no instructions and required to carry chocolate with them of for two days. Those more impacted by food related cues ate less and had fewer cravings in the ACT condition.
  • Gratz, K.L., Bornovalova, M.A., Delany-Brumsey, A., Bettina, N. & Lejuez, C.W. (2007). A laboratory-based study of the relationship between childhood abuse and experiential avoidance among inner-city substance users: The role of emotional nonacceptance. Behavior Therapy, 38(3), 256-268.
  • Marcks, B.A. & Woods, D.W. (2007). Role of thought-related beliefs and coping strategies in the escalation of intrusive thoughts: An analog to obsessive-compulsive disorder. Behaviour Research and Therapy, 45, 2640–2651.
  • Masedo, A.I. & Esteve, M.R. (2007). Effects of suppression, acceptance and spontaneous coping on pain tolerance, pain intensity and distress. Behaviour Research and Therapy, 45, 199-209.
    A large and well-controlled randomized study that replicated Hayes, Bissett, Korn, Zettle, Rosenfarb, Cooper, & Grundt, 1999. Acceptance methods drawn from the 1999 ACT book and from the Hayes et al. 1999 pain study (the methods used included an acceptance rationale, practicing awareness of experience, the “Passengers on the Bus” exercise, and the ‘Two Scales Metaphor’) increased pain tolerance and decreased pain ratings in a cold pressor task as compared both to suppression methods (based on thought stopping) and to participants preferred method of coping (which tended to include distraction, relaxation, and keeping the hand still). The latter two conditions did not differ from each other in the main analysis.
  • Roche, B., Forsyth, J.P. & Maher, E. (2007). The impact of demand characteristics on brief acceptance- and control-based interventions for pain tolerance. Cognitive and Behavioral Practice, 14, 381-393.
  • Tull, M.T. & Roemer, L. (2007). Emotion regulation difficulties associated with the experience of uncued panic attacks: Evidence of experiential avoidance, emotional nonacceptance, and decreased emotional clarity. Behavior Therapy, 38(4), 378-391.

2006

  • Campbell-Sills, L., Barlow, D. H., Brown, T. A., & Hofmann, S. G. (2006). Effects of suppression and acceptance on emotional responses of individuals with anxiety and mood disorders. Behaviour Research and Therapy, 44, 1251-1263.
    Similar to the study above, brief acceptance methods led to lower heart rate during exposure to an aversive film and less negative affect during the post-film recovery period that did control strategies in individuals with anxiety and mood disorders.
  • Campbell-Sills, L., Barlow, D. H., Brown, T. A., & Hofmann, S. G. (2006). Acceptability and suppression of negative emotion in anxiety and mood disorders. Emotion, 6(4), 587–595.
    This study compared the responses of participants from a clinical and non-clinical sample to an emotion provoking film. The study found that participants from the clinical group spontaneously used suppression to a greater degree than non-clinical participants and that attempts at suppression were associated with greater distress.
  • Cohen, G.L., Garcia, J., Apfel, N. & Master, A. (2006). Reducing the racial achievement gap: A social-psychological intervention. Science, 313, 1307-1310.
  • Williams, L.M. (2006). Acceptance and commitment therapy: An example of third-wave therapy as a treatment for Australian Vietnam War veterans with posttraumatic stress disorder: Unpublished dissertation, Charles Sturt University, Bathurst, New South Wales.

2005

  • Keogh, E., Bond, F. W., Hanmer, R. & Tilston, J. (2005). Comparing acceptance and control-based coping instructions on the cold-pressor pain experiences of healthy men and women. European Journal of Pain, 9, 591-598.
    Simple acceptance-based coping instructions improved affective pain more than distraction but only for women.
    Tested acceptance- and control-based instructions in a cold pressor task. The result showed that the acceptance-based coping strategy could reduce self-reported pain, and that males and females reacted to the coping strategies differently. Females produced lower pain level following the acceptance-based strategy than males.
  • Marcks, B. A. & Woods, D. W. (2005). A comparison of thought suppression to an acceptance-based technique in the management of personal intrusive thoughts: A controlled evaluation. Behaviour Research and Therapy, 43, 433-445.
    Two studies. Correlational study shows suppressing personally relevant intrusive thoughts is associated with more thoughts, more distress, greater urge to do something. Those who accept are less obsessional, depressed and anxious. Experimental study shows that instructions to suppress does not work and leads to increased level of distress; instructions of accept (using a couple of short metaphors drawn from the ACT book) decreases discomfort but not thought frequency.
  • Zettle, R. D., Hocker, T. R., Mick, K. A., Scofield, B. E., Petersen, C. L., Hyunsung S., & Sudarijanto, R. P. (2005). Differential strategies in coping with pain as a function of level of experiential avoidance. The Psychological Record, 55(4), 511-524.
    Correlational. High versus low EA participants show differences in pain tolerance and in pain coping.

2004

  • Masuda, A., Hayes, S. C., Sackett, C. F., & Twohig, M. P. (2004). Cognitive defusion and self-relevant negative thoughts: Examining the impact of a ninety year old technique. Behaviour Research and Therapy, 42, 477-485.
    Shows in a series of time-series designs and a group study, that the “milk, milk, milk” defusion technique reduces distress and believability of negative self-referential thoughts.
  • Gutiérrez, O., Luciano, C., Rodríguez, M., & Fink, B. C. (2004). Comparison between an acceptance-based and a cognitive-control-based protocol for coping with pain. Behavior Therapy, 35, 767-784.
    Randomized study with analogue pain task showing greater tolerance for pain in the defusion and acceptance-based condition drawn from ACT as compared to a closely parallel cognitive-control based condition.
  • Karekla, M., Forsyth, J. P., & Kelly, M. M. (2004). Emotional avoidance and panicogenic responding to a biological challenge procedure.Behavior Therapy, 35, 725-746.
    Normal participants high or low on the AAQ were exposed to a CO2 challenge. High emotional avoiders reported more panic symptoms than low avoiders. No difference physiologically.
  • Levitt, J. T., Brown, T. A., Orsillo, S. M., & Barlow, D. H. (2004). The effects of acceptance versus suppression of emotion on subjective and psychophysiological response to carbon dioxide challenge in patients with panic disorder. Behavior Therapy, 35, 747-766.
    Acceptance methods (drawn directly from the ACT book) did a better job than control strategies in promoting successful exposure in panic disordered patients.
  • Sloan, D. M. (2004). Emotion regulation in action: Emotional reactivity in experiential avoidance. Behaviour Research and Therapy, 42, 1257-1270.
    Examined the relationship between emotional reactivity (self-report and physiological reactivity) to pleasant, unpleasant, and neutral emotion-eliciting stimuli and experiential avoidance as measured by the AAQ. Sixty-two participants were separated into high and low experiential avoiders. Results indicated that high EA participants reported greater emotional experience to both unpleasant and pleasant stimuli compared to low EA participants. In contrast to their heightened reports of emotion, high EA participants displayed attenuated heart rate reactivity to the unpleasant stimuli relative to the low EA participants. Findings were interpreted as reflecting an emotion regulation attempt by high EA participants when confronted with unpleasant emotion-evocative stimuli.
  • Spira, A. P., Zvolensky, M. J., Eifert, G. H., & Feldner, M. T. (2004). Avoidance-oriented coping as a predictor of anxiety-based physical stress: A test using biological challenge. Journal of Anxiety Disorders, 18, 309–323.

2003

  • Eifert, G. H. & Heffner, M. (2003). The effects of acceptance versus control contexts on avoidance of panic-related symptoms. Journal of Behavior Therapy and Experimental Psychiatry, 34, 293-312.
    Randomized study comparing control versus acceptance during a CO2 challenge with anxious subjects. Acceptance oriented exercise (the finger trap) reduced avoidance, anxiety symptoms, and anxious cognitions as compared to breathing training.
  • Feldner, M. T., Zvolensky, M. J., Eifert, G. H., & Spira, A. P. (2003). Emotional avoidance: An experimental tests of individual differences and response suppression during biological challenge. Behaviour Research and Therapy, 41, 403-411.
    High emotional avoidance subjects showed more anxiety in response to CO2, particularly when instructed to suppress their emotions.
  • Hopkinson, J. & Neuringer, A. (2003). Modifying behavioral variability in moderately depressed students. Behavior Modification, 27(2), 251-264.

2002

  • Takahashi, M., Muto, T., Tada, M., & Sugiyama, M. (2002). Acceptance rationale and increasing pain tolerance: Acceptance-based and FEAR-based practice. Japanese Journal of Behavior Therapy, 28, 35-46.
    Small randomized trial that replicated Hayes, Bissett, Korn, Zettle, Rosenfarb, Cooper, & Grundt, 1999. An acceptance rationale plus two ACT defusion exercises (leaves on the stream and physicalizing) did significantly better than a match control focused intervention on pain tolerance, or a lecture on pain.

1999 or Before

Steven Hayes

Qualitative Studies

Qualitative Studies

Qualitative Studies by Year (including Mixed Methods)

2014

  • Bacon, T., Farhall, J., & Fossey, E. (2014). The active therapeutic processes of acceptance and commitment therapy for persistent symptoms of psychosis: Clients’ perspectives. Behavioural and cognitive psychotherapy, 42(04), 402-420.

2013

  • Barker, E., & McCracken, L. M. (2013). From traditional cognitive–behavioural therapy to acceptance and commitment therapy for chronic pain: a mixed-methods study of staff experiences of change. British Journal of Pain, 2049463713498865.
Mick Darby

Reviews of the Empirical Literature

Reviews of the Empirical Literature

Empirical Reviews of ACT Data

2010

  • Ruiz, F. J. (2010). A review of Acceptance and Commitment Therapy (ACT) empirical evidence: Correlational, experimental psychopathology, component and outcome studies. International Journal of Psychology and Psychological Therapy, 10, 125-162.

2008

  • Öst, L. G. (2008). Efficacy of the third wave of behavioral therapies: A systematic review and meta-analysis. Behaviour Research and Therapy, 46(3), 296-321

2006

Meta-analysis of ACT process evidence and ACT outcomes, current through Summer 2005.

2004

Tutorial review of the ACT literature current through late 2003.
Steven Hayes

Studies Underway that We Know About

Studies Underway that We Know About

Projects underway or recently completed that we know about

Frank Bond has completed and is writing up two replications and extensions of the Bond and Bunce 2000 study

Fredrick Livheim (livheim@hotmail.com) has conducted a randomized prevention trial with ACT in a school setting. Sigificantly better stress outcomes including at a 6 month follow up

Heather Nash who was at University of Alaska, has relocated to Las Vegas. She has a study of ACT with eating disorders using a multiple baseline

John Forsyth and Maria Karekla (University of Albany) ran a small RCT comparing an Acceptance Framed version of Panic Control Therapy vs. a "treatment as usual" version of Panic Control Therapy for persons suffering from panic disorder. The results are being written up. Persons in the ACT Framed condition were  less likely to drop out of treatment just prior to interoceptive exposure compared with the TAU condition.

John Forsyth and Sean Sheppard (University at Albany) are about to submit a write up of a large RCT comparing the effectiveness of The Mindfulness & Acceptance Workbook for Anxiety in a National and International sample of people who view their anxiety and fear as a significant problem for them.

John Forsyth, Ed Hickling, Dan Silverman have conducted an effectiveness study evaluating a half day ACT workshop for people suffering from Multiple Sclerosis (MS). The study includes pre-workshop assessment and a 3 month follow-up, plus a treatment seeking MS control group that did not get the workshop. The workshop significantly reduced depression (from moderate-to-severe range to mild range), thought suppression, and pain interference on quality of life.

Similar ACT-based anxiety protocols are being tested by Jill Levitt, and by Eifert, Forsyth, & Craske

Branstetter, A., Wilson, K. G., & Mutch, D. G. (August 2003). ACT and the treatment of psychological distress among cancer patients. Paper given at the World Conference on ACT, RFT, and the New Behavioral Psychology, Linköping, Sweden. Large randomized trial showing that ACT is more helpful than traditional CBT in dealing with end stage cancer and works through a different process. Under revie

Randomized trial underway on ACT for command hallucinations in Australia. Under the direction of Fran Shawyer at the Mental Health Research Institute of Victoria. email: fshawyer@mhri.edu.au

Julieann Pankey has found that the AAQ is highly correlated with complicated grieving.
Dosheen Cook has found that the AAQ-heath relationship is the same in Asian as in Caucasian populations

Meyer, B., & Chow, L. (2003, June). Preference for experiential/mindfulness versus rational/cognitive Therapy: The role of information processing styles and sociopolitical attitudes. Poster presented at the annual convention of the Society for Psychotherapy Research. Weimar, Germany. Found that ACT was preferred by liberals … conservative preferred CBT. You can get this manuscript from b.meyer@roehampton.ac.uk

Greco, Dew, & Blomquist have a small uncontrolled pilot-feasibility study currently underway examining the impact of ACT for adolescents with chronic abdominal pain, anxiety, and depression (current enrollment = 10 teens/parents).

Greco has examined willingness and experiential avoidance among children who experience chronic abdominal pain and persistent headaches. Unpublished as of yet. After controlling for gender, age, and pain frequency, duration, and severity, higher levels of acceptance predicted life quality (Beta = .38), and experiential avoidance/fusion predicted greater use of school medical services and school restrooms during class time (Betas = .24 and .23, respectively), lower quality of life (Beta = -.49), higher anxiety (Beta = .64), and lower teacher-rated academic competence (Beta = -.29).

Greco, Dew, & Baer have a manuscript underway that presents psychometric properties of the Willingness and Action Measure (WAM), Avoidance and Fusion Questionnaire (AFQ), and Child Acceptance and Mindfulness Measure (CAMM). Findings suggest that the WAM and CAMM correlate positively with positive functioning, whereas scores on the AFQ correlate positively with physical and emotional symptoms and school disability.

Greco & Russell (2004) evaluated the short-term effects of participating in a summer camp for diabetic youth and investigated the extent to which psychological acceptance moderated children’s response to camp. Psychological acceptance (using the WAM) moderated the relation between pre- and post-camp diabetes self-care behavior, with self-care ratings increasing most when psychological acceptance was high (Beta = .24, p < .05).

Laurie Greco is testing out ACT with eating disorders

Heather Murray, James Herbert, and Evan Forman have a group ACT vs group CBT RCT for Smoking Cessation underway

Laura Ely and Kelly Wilson have a small (n = 10) open trial with college students at risk for drop out. Showed improvements on grades and on many of the subscales of the LASSI (study skills inventory) such as time management and using study aids which were never directly addressed

Claire Keogh is working on an extension of the Masuda
study on defusion. So far the data are consistent with the original.

Claire Keogh, Hilary-Anne Healy have completed a study on the utility of a defusion statement ("I am having the thought that" when presented in the context of positively and negatively evaluated self-referential statements in an automated procedure. Good data

Anne Keogh is comparing acceptance and control as interventions with experimentally induced radiant heat pain. Data is looking good for acceptance. May be a gender diff

Andy Cochrane, is looking at acceptance and a behavioral approach task relevant to spider phobia. All interventions fully automated. No data yet.

Geraldine Scanlon is working with a sample of ADHD kids on self-esteem, trying to replicate the recent study of me-good and me-bad relations published in the Record by Rhonda and Kelly.

Claire Campbell is investigating the PASAT and mirror tracing procedures for stress tolerance and applying ACT interventions to them.

Fodhla Coogan and Loretto Cunningham are looking at experimental analogues of experiential avoidance in the context of equivalence relations and aversive versus positive pictures.

Kevin Vowles and John Sorrell have been piloting a group treatment for chronic pain patients integrating the traditional educational stuff that is often part of psychological treatments for pain (e.g., meds, exercise, nutrition, sleep, communication) with ACT. The treatment consists of eight 90-minute sessions. Data so far look good

Frank Gardner at La Salle has a study being written up that shows that
1. Individuals who score high on measures of anger (STAXI) also score high on experiential avoidance and low on emotion regulation.
2. Individuals who score high on anger AND demonstrate behavioral dysregulation are likely to have a significant aversiove early life history (across multiple domains) unlike those patients with behavior dysregulation with minimal anger. These same patients score much lower on QOLI and a values assessment that we have bveen using as well.-
3. The AAQ predicts early termination from treatment (explaining 51% of the variance)... when directly targeted with a a 10 minute "psychoeducation" about experiential avoidance premature termination (69% of which occurs between intake and session 1) is reduced by 50%.

Jason Luoma at University of Nevada, Reno is conducting a randomized trial comparison an introductory 2-day workshop on ACT to the same workshop plus six sessions of phone consultation on learning ACT.

Brandon Gaudiano is conducting a pilot study of a novel psychosocial treatment integrating behavioral activation and ACT for patients with Major Depressive Disorder, severe with psychotic features.

Jen Plumb and Steven Hayes examined the relationship between personal values and depression using the PVQ (Blackledge & Ciarrochi). Found that depressed individuals were more likely to report low success at living consistently with values across domains than non-depressed individuals, and the discrepancy between values success and importance was related more strongly to psychological functioning in depressed individuals than non-depressed individuals. When depressed individuals were low on success at living consistently with their values they were more likely to endorse pliant and avoidance based reasons for choosing those values than non-depressed controls.

Jen Plumb, Mike Levin and Steven Hayes are examining the potentially motivative effects of values statements on studying behavior in college students. Two studies are underway (data collection phase). One examines self-monitoring of study behavior versus a simple values intervention in addition to self-monitoring. The other examines the differential effects of aversive values motivation (e.g., pliant, avoidant functions) as opposed to appetitive values motivation (e.g., choice, awareness of the reinforcement from living consistent with values) on studying behavior.

JoAnne Dahl and students have RCTs underway in smoking, OCD, and obesity.

JoAnne Dahl has an RCT underway with headache and one with social phobia

Julie Wetherell at UCSD and the VA there (working with Niloo Afari, who recently joined their faculty) have a paper under review comparing ACT to CBT in 100 chronic pain patients.

Nancy Kocovski, Jan Fleming, & Neil Rector (U of Toronto) have an ACT protocol (they call it Mindfulness and Acceptance-Based Group Therapy) for social anxiety that is working well and is headed toward a randomized controlled trial

Tobias Lundgren has finished an ACT RCT for adolescents diagnosed with Aspergers syndrome. The study involved a 12 week treatment program with a 2 months follow up. Significant interaction effects were found on depression, anxiety and stress scales in favor of the treatment group. Furthermore, significant interaction effects were found on attention ability and teacher ratings on troublesome behavior as compared to a waiting list.

Study underway by Andrew Gloster and colleagues at the Institute of Clinical Psychology & Psychotherapy in Dresden, Germany, grant funded by the German government entitled: What Should We Do When CBT for Panic/Agoraphobia Fails: ACT! The goal is to test whether ACT can help those patients who are categorized as non-responders following an intense course of CBT.

Studies underway at the School of Psychology, University of Wollongong

1) Billich, Ciarrochi, & Deane have completed a wait-list control trial of ACT with the NSW police. The research suggests that ACT improves mental health, at least in the short run. We are writing this up for publication (This is funded by the Australian Research Council)

2) Fisher and Ciarrochi are conducting a cross-sectional study on personal values and quality of life amongst clients with Cancer. We are examining whether people have better adjustment and mental health when they tend to hold values for authentic reasons (e.g., vitality) rather than controlled reasons (e.g., external pressure), and when they tend to succeed at authentically held values.

3) Ciarrochi and Bailey (in press) have developed a new measure that is designed to aid values clarification. The measure is called the Survey of Life Principles (SLP), and is currently being evaluated in a number of studies. Stefanic and Ciarrochi are examining the psychometric properties of the SLP. Frearson & Ciarrochi are evaluating it in the context of couples satisfaction. Bayliss and Ciarrochi are evaluating it in the context of the police force.

4) Bayliss and Ciarrochi have done a small longitudinal study amongst NSW police recruits, following them from police recruit (Time 1) to one year in the police force (Time 2). Mindfulness, low experiential avoidance, and emotion identification skill were significant predictors of mental health at Time 2, even after controlling for mental health at Time 1. We are in the process of writing this up. (This is funded by the Australian Research Council)

5) We are now in the seventh year of a large longitudinal study of adolescents (now aged 17). Supavadeeprasit and Ciarrochi are preparing a manuscript that looks at experiential avoidance (in grade 8) predicting future social and emotional well-being. Jordan & Ciarrochi have also been looking at the measurement of mindfulness amongst adolescents and its ability to predict future levels of social and emotional well-being (The longitudinal study is been funded by the Australian Research Council and the National Health and Medical Research Council).

6) Ciarrochi, Lane, & Blackledge have developed an internet-based ACT intervention for people diagnosed with cancer. We are in the process of evaluating its efficacy. (This has been funded by the NSW Cancer Council).

Judith Wetherell at UCSD has a trial on ACT for geriatric GAD

Gerhard Andersson has an RCT completed on ACT for tinnitus

Chris Watson and Christine Purdon at the University of Waterloo, Canada, compared cognitive defusion (using word repetition) to imaginal exposure and no intervention in reducing the believability, distress, and meaningfulness associated with contamination-related thoughts in individuals with high levels of obsessive-compulsive disorder (OCD). Significant reductions in belief, distress, and meaningfulness were observed following defusion but not the other two conditions. At follow up both defusion and exposure produced gains. The loss of verbal meaning in defusion was associated with reductions in appraisal ratings at follow-up.

There is an RCT for lupus being done by Tomás Quirosa and Olga Gutiérrez in Almeria

Annie Umbricht at Johns Hopkins has submitted a grant on ACT and Contingency Management for substance abuse


Jan Blalock has an NIH grant for an RCT on ACT for smoking (as of 2009)


Angie Stotts is nearing completion of her RCT of ACT to help with drug detoxification. Good effect sizes ... on the edge p value wise (ah the joys of low power)


Michelle Sheets, a Ph.D. student at Hofstra University, and Yulia Landa at Cornell Medical College has a trial on ACT for delusions underway at the New York Presbyterian Hospital. Contact: yul9003@med.cornell.edu


Rhonda Merwin posted on 5/21/2014:

My colleagues (Timko, Zucker) and I have completed an open trial of adolescent anorexia nervosa (N = 47) - there were nice outcomes - remission rates were similar to Family Based Treatment (Maudsley). The preliminary paper is out- the main paper will be out soon.

My colleagues (Bigatti et al.) and I have completed an small RCT (N = 28) comparing ACT to an educational control for fibromyalgia-- data supported some unique positive outcomes for ACT. Manuscript in progress.

 

Jean Fournier fournier@u-paris10.fr has several studies coming on ACT for high level athletes in France


Jane Morton, Sharon Snowden, and Michelle Gopold in Melbourne have an RCT on ACT for BPD … under review right now

Michele Craske at UCLA has a couple of large ACT vs. CBT projects with anxiety disorders. The first one, with Joanna Arch as senior author, is under submission. Similar outcomes ….different in a few subgroups; different moderators and mediators


Niloofar Afair at UC San Diego / VA has a VA grant for an RCT of ACT for binge eating


Niloo is also doing a pilot study of ACT for distress and treatment decision-making in early stage prostate cancer patients.


Julie Wetherell at UC San Diego has a VA grant to do a non-inferiority trial comparing ACT in person to ACT in telehealth for chronic pain.
 

Additional information about research being conducted in Australia and New Zealand can be found here.

Steven Hayes

Non-Empirical Readings

Non-Empirical Readings

The non-empirical literature on ACT / RFT (we are listing primarily ACT work here) is large. In order to make this list easy to update it is listed by year, but do note that this puts some of the important articles in the middle.

In Press

  • Wilson, K. G., & Sandoz, E. K. (in press). Mindfulness, values, and the therapeutic relationship in Acceptance and Commitment Therapy. In S. F. Hick & T. Bein (Eds.), Mindfulness and the therapeutic relationship. New York: Guilford Press.

2008

  • Blackledge, J. T., Moran, D. J., & Ellis, A. E. (2008). Bridging the divide: Linking basic science to applied psychotherapeutic interventions - A relational frame theory account of cognitive disputation in rational emotive behavior therapy. Journal of Rational-Emotive & Cognitive-Behavior Therapy.

2007

  • Blackledge, J. T. (2007). Disrupting verbal processes: Cognitive defusion in Acceptance and Commitment Therapy and other Mindfulness-based Psychotherapies. The Psychological Record, 57(4).
  • Chowla, N., & Ostafin, B. (2007). Experiential avoidance as a functional dimensional approach to psychopathology: An empirical review. Journal of Clinical Psychology, 63(9), 871–890.
  • Hayes, S. C., & Plumb, J. C. (2007). Mindfulness from the Bottom Up: Providing an Inductive Framework for Understanding Mindfulness Processes and their Application to Human Suffering. Psychological Inquiry, 18(4), 242-248.
  • Pierson, H., & Hayes, S. C. (2007). Using Acceptance and Commitment Therapy to empower the therapeutic relationship. In in P. Gilbert & R. Leahy (Eds.), The Therapeutic Relationship in Cognitive Behavior Therapy (pp. 205-228). London: Routledge
  • Twohig, M. P., Moran, D. J., & Hayes, S. C. (2007). A functional contextual account of Obsessive Compulsive Disorder. In D. Woods & J. Kanter (Eds.), Understanding Behavior Disorders. Reno, NV: Context Press.
  • Twohig, M. P., & Hayes, S. C. (2007). Implications of verbal processes for childhood disorders: Tourette’s disorder, attention deficit hyperactivity disorder, and autism. In D. Woods & J. Kanter (Eds.), Understanding Behavior Disorders. Reno, NV: Context Press.

2006

  • Bond, F. W., Hayes, S. C., & Barnes-Holmes, D. ( 2006). Psychological Flexibility, ACT and Organizational Behavior. In S. C. Hayes, F. W. Bond, D. Barnes-Holmes, & J. Austin (Eds.), Acceptance and Mindfulness at Work: Applying Acceptance and Commitment Therapy and Relational Frame Theory to Organizational Behavior Management (pp. 25-54). Binghamton, NY: The Haworth Press.
  • Hayes, S. C. (2006). Language, self, and diversity. In J. C. Muran (Ed.), Dialogues on difference: Diversity studies of the therapeutic relationship. Washington, DC: American Psychological Association.
  • Roemer, L., Salters-Pedneault, K., & Orsillo, S. M. (2006). Incorporating mindfulness and acceptance-based strategies in the treatment of generalized anxiety disorder. In R. Baer (Ed.), Mindfulness-Based Treatment Approaches: Clinician's Guide to Evidence Base and Applications (pp 52-74). New York: Academic Press.
  • Shenk, C., Masuda, A., Bunting, K., & Hayes, S. C. (2006). The psychological processes underlying mindfulness: Exploring the link between Buddhism and modern contextual behavioral psychology. In D. K. Nauriyal (Ed.), Buddhist thought and applied psychology: Transcending the boundaries. London: Routledge-Curzon.
  • Walser, R. D., & Hayes, S. C. (2006). Acceptance and Commitment Therapy and trauma survivors. In V. Follette (Ed.), Trauma in context: A cognitive behavioral approach to trauma, Second Ed. New York: Guilford Press.

2005

  • Bach, P. A., Gaudiano, B. A., Pankey, J., Herbert, J. D., & Hayes, S. C. (2005). Acceptance, mindfulness, values, and psychosis: Applying ACT to the chronically mentally ill. In R. Baer (Ed.), Mindfulness-based interventions: A clinician’s guide. San Diego: Elsevier.
  • Batten, S. V., Orsillo, S. M., & Walser, R. D. (2005). Acceptance and mindfulness-based approaches to the treatment of posttraumatic stress disorder. In S. M. Orsillo & L. Roemer (Eds.), Acceptance and mindfulness-based approaches to anxiety: Conceptualization and treatment. New York: Springer.
  • Ciarrochi, J., Robb, H., & Godsell, C. (2005). Letting a little nonverbal air into the room: Insights from Acceptance and Commitment Therapy: Part 1: Philosophical and theoretical underpinnings. Journal of Rational-Emotive & Cognitive-Behavior Therapy, 23, 79-106.
  • Ciarrochi, J., & Robb, H. (2005). Letting a little nonverbal air into the room: Insights from acceptance and commitment therapy: Part 2: Applications. Journal of Rational-Emotive & Cognitive Behavior Therapy, 23(2), 107-130.
  • Dahl, J., & Lundgren, T. (2005). Behavior Analysis of Epilepsy: Conditioning mechanisms, be-havior technology and the contribution of ACT. The Behavior Analyst Today, 6(3), 191-202.
  • Fletcher, L., & Hayes, S. C. (2005). Relational Frame Theory, Acceptance and Commitment Therapy, and a functional analytic definition of mindfulness. Journal of Rational-Emotive and Cognitive-Behavioral Therapy, 23(4), 315-336.
  • Greco, L. A., Blackledge, J. T., Coyne, L. W., & Enreheich, J. (2005). Acceptance and mindfulness-based approaches for childhood anxiety disorders: Acceptance and Commitment Therapy as an Example. In S. M. Orsillo & L. Roemer (Eds.), Acceptance and Mindfulness-Based Approaches to Anxiety: Conceptualization and Treatment. New York: Kluwer/Plenum.
  • Hayes, S. C. (2005). Stability and change in Cognitive Behavior Therapy: Considering the implications of ACT and RFT. Journal of Rational-Emotive & Cognitive-Behavior Therapy, 23(2), 131-151.
  • Orsillo, S. M., Roemer, L., & Holowka, D. (2005). Acceptance-based behavioral therapies for for anxiety: Using acceptance and mindfulness to enhance traditional cognitive-behavioral approaches. In S. M. Orsillo & L. Roemer (Eds.), Acceptance- and mindfulness-based approaches to anxiety: Conceptualization and treatment. New York: Springer
  • Twohig, M. P., Masuda, A., Varra, A. A., & Hayes, S. C. (2005). Acceptance and Commitment Therapy as a treatment for anxiety disorders. In S. M. Orsillo & L. Roemer (Eds.), Acceptance and mindfulness-based approaches to anxiety: Conceptualization and treatment (pp. 101-130). New York: Kluwer/Springer-Verlag.
  • Twohig, M., Pierson, H. M., & Hayes, S. C. (2005). Homework in Acceptance and Commitment Therapy. Chapter to appear in Kazantzis, N. & L'Abate, L. (Eds.), Handbook of homework assignments in psychotherapy: Research, practice, and prevention. New York: Springer.
  • Zettle, R. D. (2005). The evolution of a contextual approach to therapy: From Comprehensive Distancing to ACT. International Journal of Behavioral and Consultation Therapy, 1, 77-89.

2004

  • Blackledge, J. T. (2004). Functional Contextual Processes in Posttraumatic Stress. International Journal of Psychology and Psychological Therapy, 4(3), 443-467.
  • Coyne, L. W., & Wilson, K. G. (2004). The role of cognitive fusion in impaired parenting: An RFT analysis. International Journal of Psychology and Psychological Therapy, 4, 469-486.
  • Hayes, S. C. (2004). Acceptance and Commitment Therapy and the new behavior therapies: Mindfulness, acceptance and relationship. In S. C. Hayes, V. M. Follette, & M. Linehan (Eds.), Mindfulness and acceptance: Expanding the cognitive behavioral tradition (pp. 1-29). New York: Guilford.
  • Hayes, S. C. (2004). Acceptance and Commitment Therapy, Relational Frame Theory, and the third wave of behavior therapy. Behavior Therapy, 35, 639-665.
    Makes the case that ACT is part of a larger shift in the behavioral and cognitive therapies toward more contextual approaches
  • Wilson, K. G. & Murrell, A. R. (2004). Values work in Acceptance and Commitment Therapy: Setting a Course for Behavioral Treatment. In Hayes, S. C., Follette, V. M., & Linehan, M. (Eds.) Mindfulness & Acceptance: Expanding the cognitive-behavioral tradition (pp. 120-151). New York: Guilford Press.

2003

  • Baer, R. A. (2003). Mindfulness training as a clinical intervention: a conceptual and empirical review. Clinical Psychology: Science and Practice, (10)2, 125-143.
  • Hayes, S. C., Masuda, A., & De Mey, H. (2003). Acceptance and Commitment Therapy and the third wave of behavior therapy (Acceptance and Commitment Therapy: een derde-generatie gedragstherapie). Gedragstherapie (Dutch Journal of Behavior Therapy), 2, 69-96.
  • Hayes, S. C., & Pankey, J. (2003). Psychological acceptance. In W. O'Donohue, J. Fisher, & S. C. Hayes (Eds.), Cognitive-behavior therapy: Applying empirically supported techniques in your practice (pp. 4-9). New York: Wiley.

2002

  • Bond, F. & Hayes, S. C. (2002). ACT at work. In F. Bond & W. Dryden (Eds.), Handbook of Brief Cognitive Behaviour Therapy. Chichester, England: Wiley.
    This chapter has a fairly complete treatment manual for the treatment of stress in the workplace using ACT. It was the manual for the study above.
  • Hayes, S. C., (2002). Buddhism and Acceptance and Commitment Therapy. Cognitive and Behavioral Practice, 9, 58-66.
  • Hayes, S. C. (2002). Acceptance, mindfulness, and science. Clinical Psychology: Science and Practice, 9 (1), 101-106.
  • Hayes, S. C., & Pankey, J. (2002). Experiential Avoidance, Cognitive Fusion, and an ACT Approach to Anorexia Nervosa. Response: ACT Approach to Anorexia. Cognitive and Behavioral Practice, 9, 243-247.
  • Zettle, R. D. & Hayes, S. C. (2002). Brief ACT treatment of depression. In F. Bond & W. Dryden (Eds.), Handbook of Brief Cognitive Behaviour Therapy (pp. 35-54). Chichester, England: Wiley.

2001

  • Follette, V. M., & Batten, S. V. (2000). The role of emotion in psychotherapy supervision: A contextual behavioral analysis. Cognitive and Behavioral Practice, 7(3), 306-312.
    Describes a contextual approach to psychotherapy supervision, using a model derived from Acceptance and Commitment Therapy and Functional Analytic Psychotherapy.
  • Follette, W. C. and Hayes, S. C. (2000). Contemporary behavior therapy. In C. R. Snyder and R. Ingram (Eds.), The handbook of psychological change (pp. 381-408). New York: Wiley.
  • Hayes, S. C. (2000). Acceptance and Commitment Therapy in the treatment of experiential avoidance disorders. Clinician’s Research Digest (Supplemental Bulletin 22, June, 1-2).
  • Hayes, S. C. & Bissett, R. T. (2000). Behavioral psychotherapy and the rise of clinical behavior analysis. In J. A. Austin & J. E. Carr (Eds.), Handbook of applied behavior analysis (pp. 231-245). Reno: Context Press.
  • Hayes, S. C. & Gregg, J. (2000). Functional contextualism and the self. In C. Muran (Ed.), Self-relations in the psychotherapy process (pp. 291-307). Washington, DC: American Psychological Association.
    Deals with the self issue.
  • Luciano, C. & Hayes, S. C. (2001). Treating experiential avoidance. International Journal of Clinical and Health Psychology, 1, 109-157.

2000

1999

  • Hayes, S. C., Wilson, K. G., & Gifford, E.V. (1999). Consciousness and private events. In B. Thyer (Ed.), The philosophical legacy of behaviorism (pp. 153-187). Lancaster, UK: Kluwer.
  • Wilson, K. G. & Blackledge, J. T. (1999). Recent Developments in the Behavioral Analysis of Language: Making Sense of Clinical Phenomena. In M. J. Dougher (Ed.), Clinical behavior analysis. Reno, NV: Context Press.

1998

  • Gifford, E. V. & Hayes, S. C. (1998). Functional contextualism: A pragmatic philosophy for behavioral science. In W. O’Donohue & R. Kitchener (Eds.), Handbook of behaviorism (pp. 285-327). New York: Academic Press.
  • Hayes, S. C., Gregg J., Wulfert, E. (1998). Akzeptanz- und commitment- therapie: ein radikal behavioraler ansatz. In Sulz, Serge K. D. (Ed.), Kurz psychotherapien: Wege in die zunkunft der psychotherapie. (pp.145-162) CIP-Medien: München, Germany.
  • Walser, R. D. & Hayes, S. C. (1998). Acceptance and trauma survivors: Applied issues and problems. In V. Follette, J. Ruzak, & F. Abueg (Eds.), Trauma in context: A cognitive behavioral approach to trauma (pp. 256-277). New York: Guilford Press.

1997

  • Hayes, S. C., & Ju, W. (1997). The applied implications of rule-governed behavior. Chapter in W. O’Donohue (Ed.), Learning and behavior therapy (pp. 374-391). New York: Allyn & Bacon.
  • Robinson, P. & Hayes, S. C. (1997). Acceptance and commitment: A model for integration. In N. A. Cummings, J. L. Cummings, & J. N. Johnson. (Eds.), Behavioral health in primary care: A guide for clinical integration (pp. 177-203). Madison, CT: Psychosocial Press.

1996

1995

  • Hayes, S. C., & Wilson, K. G. (1995). The role of cognition in complex human behavior: A contextualistic perspective. Journal of Behavior Therapy and Experimental Psychiatry, 26, 241-248.

1994

  • Hayes, S. C. (1994). Content, context, and the types of psychological acceptance. Chapter in Hayes, S. C., Jacobson, N. S., Follette, V. M. & Dougher, M. J. (Eds.), Acceptance and change: Content and context in psychotherapy (pp. 13-32). Reno, NV: Context Press.
  • Hayes, S. C. & Wilson, K.G. (1994). Acceptance and Commitment Therapy: Altering the verbal support for experiential avoidance. The Behavior Analyst, 17, 289-303.
    An entry into ACT and its implications … but the ACT book is now better.

1993

  • Hayes, S. C. (1993). Rule governance: basic behavioral research and applied implications. Current Directions in Psychological Science, 2, 193-197.
  • Hayes, S. C., & Wilson, K. G. (1993). Some applied implications of a contemporary behavior-analytic account of verbal events. The Behavior Analyst, 16, 283-301. An entry into RFT and its implications … but the RFT book is now better.

1992

  • Hayes, S. C. (1992). Verbal relations, time, and suicide. In S. C. Hayes & L. J. Hayes (Eds.), Understanding verbal relations (pp. 109-118). Reno, NV: Context Press.
    More basic but another early paper putting together RFT and the theory of psychopathology that underlies ACT

1990 and earlier

  • Hayes, S. C., Kohlenberg, B. S. & Melancon, S. M. (1989). Avoiding and altering rule-control as a strategy of clinical intervention. In S. C. Hayes (Ed.), Rule governed behavior: Cognition, contingencies, and instructional control. (pp. 359-385). New York: Plenum.
    The first paper to try to put together RFT and ACT
  • Hayes, S. C. & Melancon, S. M. (1989). Comprehensive distancing, paradox, and the treatment of emotional avoidance. In M. Ascher (Ed.), Paradoxical procedures in psychotherapy (pp. 184-218). New York: Guilford.
    An early ACT chapter
  • Hayes, S. C. (1987). A contextual approach to therapeutic change. In N. Jacobson (Ed.), Psychotherapists in clinical practice: Cognitive and behavioral perspectives (pp. 327-387). New York: Guilford.
    The first full-length presentation of the ACT model (then known as "Comprehensive Distancing"
  • Hayes, S. C. (1984). Making sense of spirituality. Behaviorism, 12, 99-110.
    Sometimes it helps to see beginnings to understand what happens later. This odd little paper does that. It is a mix of philosophical moves and interests that is clearly on the way to ACT, RFT, deictic frames, a transcendent sense of self, defusion, mindfulness, contextual use of language, and other issues that are much clearer now. If you like the history of ideas and like ACT / RFT, this is a fun read.
  • Zettle, R. D., & Hayes, S. C. (1982). Rule governed behavior: A potential theoretical framework for cognitive behavior therapy. In P. C. Kendall (Ed.), Advances in cognitive behavioral research and therapy (pp. 73-118). New York: Academic.
Steven Hayes