Mediation Effects of Group Cohesion in Group-Based Cognitive Behavioral Therapy for Youth Anxiety Disorders.

There is limited research on group cohesion as a potential outcome facilitator in group-based cognitive-behavioral treatment (GCBT) for youth. We examined if group cohesion mediated the relation between the temperamental trait behavioral inhibition and posttreatment outcomes following GCBT for youth with anxiety disorders. The sample comprised 88 youth (M age = 11.2 years) from a randomized controlled effectiveness trial. The outcomes were posttreatment clinical severity and treatment satisfaction. Group cohesion fully mediated the relation between behavioral inhibition and posttreatment severity. Higher group cohesion was associated with lower posttreatment clinical severity. There was no significant association between behavioral inhibition and treatment satisfaction, hence no mediation. We conclude that group cohesion is a factor that can be targeted by clinicians to potentially enhance GCBT outcomes.