Effects of a brief online self-compassion training on perfectionism, self-criticism, and social anxiety: A randomized controlled trial.

This randomized controlled trial evaluates the effects of a brief online self-compassion training (SCT) on self-compassion, self-criticism, perfectionism, social anxiety, and psychological health in comparison to a generic stress-reduction training (SRT). Both training courses consisted of six brief, format-matched, unsupervised, online sessions with various exercises, and took place in a self-paced manner over 2 to 4 weeks. We collected self-report data on self-compassion, self-criticism, perfectionism, social anxiety, and psychological health. Participants were 200 healthy adults (85.5 % female, M age = 30 years), randomly allocated to the SCT or the SRT. In pre-post comparison, effect sizes for the SCT were moderate for self-compassion (dz = 0.49, 95 % CI [0.26, 0.72]), self-criticism (dz = -0.50, 95 % CI [-0.72, -0.28]), and perfectionism (dz = -0.41, 95 % CI [-0.62, -0.20]), but close to zero for social anxiety (dz = -0.01, 95 % CI [-0.21, 0.18]). Only small differences emerged between the conditions immediately after the training, except for self-compassion (d = 0.49, 95 % CI [0.02, 0.58]). At 4 weeks follow-up the effects of both trainings on the target variables, including self-compassion, were very similar. However, intervention-specific effects were pronounced and enduring for participants with high initial levels of self-criticism. The results indicate that both training courses yielded similar psychological effect patterns. Effects of the SCT were not specific to self-compassion and conceptually opposite variables like perfectionism or self-criticism. These findings highlight the importance of understanding core mechanisms of self-compassion interventions and identifying appropriate target groups in future research.