Molly Magill1, J Scott Tonigan2, Brian Kiluk3, Lara Ray4, Justin Walthers5, Kathleen Carroll3. 1. Brown University, Center for Alcohol and Addiction Studies, Providence, RI, USA. Electronic address: molly_magill@brown.edu. 2. University of New Mexico, Albuquerque, NM, USA. 3. Yale University, New Haven, CT, USA. 4. University of California at Los Angeles, Los Angeles, CA, USA. 5. Brown University, Center for Alcohol and Addiction Studies, Providence, RI, USA.
Abstract
The emphasis in addictions research has shifted toward a greater interest in identifying the mechanisms involved in patient behavior change. This systematic review investigated nearly 30 years of mediation research on cognitive behavioral therapy (CBT) for alcohol or other drug use disorders (AUD/SUD). METHOD: Study inclusion criteria targeted analyses occurring in the context of a randomized clinical trial where both intervention/intervention ingredient to mediator (a path) and mediator to outcome (b path) paths were reported. Between- and within-condition analyses were eligible, as were studies that formally tested mediation and those that conducted path analysis only. RESULTS: The review sample included K = 15 reports of primarily between-condition analyses. Almost half of these reports utilized Project MATCH (k = 2) or COMBINE (k = 4) samples. Among the mediator candidates, support for changes in coping skills was strongest, although the specificity of this process to CBT or CBT-based treatment remains unclear. Similarly, support for self-efficacy as a statistical mediator was found in within-, but not between-condition analyses. CONCLUSIONS: A coherent body of literature on CBT mechanisms is significantly lacking. Adopting methodological guidelines from the Science of Behavior Change Framework, we provide recommendations for future research in this area of study.
The emphasis in addictions research has shifted toward a greater interest in identifying the mechanisms involved in patient behavior change. This systematic review investigated nearly 30 years of mediation research on cognitive behavioral therapy (CBT) for alcohol or other drug use disorders (AUD/SUD). METHOD: Study inclusion criteria targeted analyses occurring in the context of a randomized clinical trial where both intervention/intervention ingredient to mediator (a path) and mediator to outcome (b path) paths were reported. Between- and within-condition analyses were eligible, as were studies that formally tested mediation and those that conducted path analysis only. RESULTS: The review sample included K = 15 reports of primarily between-condition analyses. Almost half of these reports utilized Project MATCH (k = 2) or COMBINE (k = 4) samples. Among the mediator candidates, support for changes in coping skills was strongest, although the specificity of this process to CBT or CBT-based treatment remains unclear. Similarly, support for self-efficacy as a statistical mediator was found in within-, but not between-condition analyses. CONCLUSIONS: A coherent body of literature on CBT mechanisms is significantly lacking. Adopting methodological guidelines from the Science of Behavior Change Framework, we provide recommendations for future research in this area of study.
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