Abstract
It is well-established that participation in dialectical behavior therapy (DBT) results in patients using adaptive coping strategies more frequently. Although coping skill instruction may be necessary to promote decreases in symptoms and behavioral targets in DBT, it is unclear if the frequency with which patients use adaptive coping skills leads to these outcomes. Alternatively, it is possible that DBT also leads patients to use maladaptive strategies less frequently and that these reductions more consistently predict improvements in treatment. We recruited 87 participants with elevated emotion dysregulation (M(age) = 30.56; 83.9% female; 75.9% White) to participate in a 6-month course of full-model DBT delivered by advanced graduate students. Participants completed measures of adaptive and maladaptive strategy use, emotion dysregulation, interpersonal problems, distress tolerance, and mindfulness at baseline and after three DBT skills training modules. Both within- and between-person maladaptive strategy use significantly predicted module-to-module changes in all outcomes whereas adaptive strategy use significantly predicted changes in emotion dysregulation and distress tolerance, although the size of these effects did not significantly differ between adaptive and maladaptive strategy use. We discuss the limitations and implications of these results for optimizing DBT.