A Pilot Randomized Controlled Trial of the Feasibility and Acceptability of Acceptance and Commitment Therapy for Comorbid Social Anxiety Disorder in a Routine Practice Setting

A prior open trial of acceptance and commitment therapy (ACT) for comorbid social anxiety disorder (SAD) and depression showed clinically significant improvement over the course of 16 sessions. The aim of the current study was to test the feasibility and acceptability of ACT for this population in a pilot randomized trial within a routine practice setting. Patients (n = 26) were randomly assigned to 16 weeks of medication treatment as usual (mTAU) versus mTAU plus ACT (mTAU + ACT). Results showed that a significantly greater percentage of patients in mTAU not only dropped out of the study but also dropped out of treatment at the practice altogether, compared to patients in mTAU + ACT. Overall, results from this study suggest that having a comparison condition of mTAU alone in a randomized trial in a routine practice setting is not feasible and that patients with comorbid forms of SAD may require psychotherapy to remain engaged in treatment in standard clinical practice. Preliminary results for patients within the mTAU + ACT condition on treatment satisfaction and outcomes were comparable to results from the prior open trial, suggesting that ACT itself is worthy of further investigation. Further modifications to the study design may be needed to develop a feasible and acceptable comparison condition against which to test ACT for comorbid SAD in a routine practice setting.