Psychological interventions for pre-event and post-event rumination in social anxiety: A systematic review and meta-analysis

Pre-event and post-event rumination have been consistently identified by cognitive models as important maintaining factors in Social Anxiety Disorder (SAD). This systematic review and meta-analysis aimed to investigate the effectiveness of psychological treatment in reducing pre-event and post-event rumination in adults with social anxiety. A comprehensive literature search identified 26 eligible studies, with 1524 total participants. Psychological treatments demonstrated large significant within-group effect sizes (from pre- to post-treatment) in reducing pre-event rumination (g = 0.86) and post-event rumination (g = 0.83). Subgroups analysed showed CBT to have large significant effect sizes in reducing pre-event rumination (g = 0.97) and post-event rumination (g = 0.85). Interventions that specifically addressed rumination were found to be significantly more effective in reducing pre-event rumination than those that did not (p = .006). Both individual and group treatment formats were equally effective in reducing pre-event rumination and post-event rumination. Meta-regressions revealed that pre-event rumination treatment effects were significantly larger in individuals with higher baseline social anxiety, meanwhile post-event rumination treatment effects were larger for those with higher baseline depression. Overall findings show that pre-event and post-event rumination are effectively reduced through psychological treatment, and clinical implications for the enhancement of evidence-based treatment protocols are discussed.