Journal of clinical psychology
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Randomized Controlled Trial Comparative Study
Specificity of effects of cognitive behavior therapy on coping, acceptance, and distress tolerance in a randomized controlled trial for smoking cessation.
Although there is extensive evidence of the efficacy of cognitive-behavioral therapy (CBT), it is less certain what potential mechanisms of change are specifically affected by CBT interventions. This study was intended to test the specific effects of CBT on compensatory coping skills, acceptance, and distress tolerance or persistence. ⋯ To the extent that CBT had specific effects on compensatory coping skills, it was for the participants who did not benefit clinically from the intervention. Much more theory-driven research on multiple candidate change mechanisms is needed to clarify how effective and specific treatments have their effects, for either patients in general or subsets of patients as in moderated effects.
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We conducted two studies to examine the dimensions, internal consistency reliability estimates, and potential correlates of the Depression Anxiety Stress Scales-21 (DASS-21; Lovibond & Lovibond, 1995). ⋯ Further investigations of the bifactor structure and psychometric properties of the DASS-21, specifically its incremental and discriminant validity, using known clinical groups are needed.