Abstract
ABSTRACT Backgrounds Dialectical behavior therapy skills training (DBT-ST) is an effective treatment for alcohol use disorder (AUD). AUD frequently co-occurs with other addictive behaviors. Objective s: These secondary analyses of prior studies on the effectiveness of a 3-month DBT-ST program for AUD investigated pre- post-treatment changes in the severity of concurrent addictive behaviors. The study hypothesized that emotion regulation and experiential avoidance should be the key therapeutic mechanisms involved in the treatment of addictive behaviors. Methods The research included 186 individuals (110 males; 76 females) with a primary diagnosis of AUD. Mediational models were performed considering shorter PROMIS questionnaire subscales (i.e., gambling, sex, shopping, food binging, and starvation) as dependent variables. The difficulties in emotion regulation scale and acceptance and action questionnaire-II total scores were independent and mediator variables, respectively. Results Clinical variables significantly improved during the treatment, independent of baseline levels. Changes in emotion regulation showed significant total effects on improvements in addictive behaviors. Significant indirect effects of changes in experiential avoidance were detected considering compulsive buying and dysfunctional eating behaviors. Conclusion The DBT-ST was a feasible treatment for several addictive behaviors frequently reported by individuals with AUD. The improvements in emotion regulation and experiential avoidance were relevant therapeutic mechanisms involved in the treatment of these conditions. Future controlled trials and follow-up studies are recommended to support the efficacy of DBT-ST as a stand-alone intervention for the treatment of different classes of addictive behaviors.
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