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Despite initially positive results, video feedback for social anxiety has never been shown to reduce social anxiety in a controlled experiment with diagnosed participants, and only once with undiagnosed participants. Previous studies arguably did not detect such an effect because of limited assessment of anxiety and potential moderators. We tested video feedback with cognitive preparation among treatment-seeking participants with a primary diagnosis of social anxiety disorder. In Session 1, participants gave an extemporaneous speech and either received the intervention or not. In Session 2, 6 to 14 days later, participants gave a second extemporaneous speech. The intervention improved self-perception of performance, particularly for those participants with the most unrealistically negative impressions of their performance (i.e., high selfobserver discrepancy). In addition, the intervention reduced anticipatory anxiety for the second speech for participants with high self-observer discrepancy. These findings extend previous results regarding video feedback and suggest that the intervention may be useful for people with social anxiety disorder and higher self-observer discrepancies for a specific task.

Further examination of the placebo effect across the anxiety disorders may elucidate maintenance mechanisms of these disorders and have implications for development of more effective treatments.

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