Background: Individuals with social anxiety disorder (SAD) often report a fear that they will lose control of their emotions or report intense, unpleasant thoughts or images of uncontrollably humiliating themselves in social situations. These fears and associated beliefs that one is likely to lose control may underlie the anxiety and/or cognitive biases (e.g., self-focused attention and negative post-event processing) experienced during and following social situations. The present experiment examined whether manipulating beliefs about losing control would cause changes in symptoms of SAD.

Methods: One hundred and twenty-six undergraduate psychology students were given false feedback that they were either at high or low risk of losing control, and then completed a social interaction task with an actor. Participants rated their anxiety before and during the interaction and completed a post-event processing questionnaire 24-hours later.

Results: Participants in the high beliefs about losing control (HLC) condition reported significantly greater subjective anxiety than those in the low beliefs about losing control (LLC) condition leading up to the social interaction task, and significantly more negative post-event processing.

Conclusion: Results suggest beliefs about losing control may play a causal role in the development and maintenance of SAD. These beliefs may represent a novel domain to be targeted in CBT.

Supplementary information: The online version contains supplementary material available at 10.1007/s10608-022-10325-w.