A randomized pilot study of mindfulness-based cognitive therapy and group cognitive-behavioral therapy for young adults with social phobia.

Twenty-six young participants, 18-25 years, with social phobia (SP) were randomly assigned to eight 2-hour sessions of group mindfulness-based cognitive therapy (MBCT) and twelve 2-hour sessions of group cognitive-behavioral therapy (CBT) in a crossover design with participants receiving treatments in reversed order. Outcome was assessed after treatments, and at 6- and 12-month follow-ups. MBCT achieved moderate-high pre-post effect sizes (d=0.