Gifford, E. V., Kohlenberg, B. S., Hayes, S. C., Antonuccio, D. O., Piasecki, M. M.., Rasmussen-Hall, M. L., & Palm, K. M. (2004). Acceptance-based treatment for smoking cessation. Behavior Therapy, 35, 689-705. https://doi.org/10.1016/S0005-7894(04)80015-7
This pilot study applied a theoretically derived model of acceptance-based treatment process to smoking cessation, and compared it to a pharmacological treatment based on a medical dependence model. Seventy-six nicotine-dependent smokers were randomly assigned to one of two treatments: Nicotine Replacement Treatment (NRT), or a smoking-focused version of Acceptance and Commitment Therapy (ACT). There were no differences between conditions at posttreatment; however, participants in the ACT condition had better long-term smoking outcomes at 1-year follow-up. As predicted by the acceptance process model, ACT outcomes at 1 year were mediated by improvements in acceptance-related skills. Withdrawal symptoms and negative affect neither differed between conditions nor predicted outcomes. Results were consistent with the functional acceptance-based treatment model.