Public speaking anxiety (PSA) is defined as a strong distress when performing a speech in front of an audience, causing impairment in terms of work possibilities and social relationships. Audience behavior and feedback received during a speech are a crucial variable to induce PSA, affecting performance and perception. In this study, two different virtual reality public speaking scenarios were developed to investigate the impact of positive (more assertive) versus negative (more hostile) audience behavior regarding perceived anxiety and physiological arousal during performance. Moreover, the presence of any carry-over effect based on first experiences (positive vs. negative) was investigated by using a within–between design. Both explicit (questionnaires) and implicit physiological measures (heart rate [HR]) were used to assess participants' experience. The results confirmed the influence of audience behavior on perceived anxiety. As expected, negative audience elicited greater anxiety and lower experience pleasantness. More interesting, the first experience influenced the perceived anxiety and arousal during performance, suggesting some sort of priming effect due to the valence of previous experience. In particular, starting with an encouraging feedback scenario did not increase the perceived anxiety and HR in front of a subsequent annoying audience. This modulation did not appear in the group who started with the annoying audience, which clearly reported higher HR and anxiety during the annoying exposure compared with the encouraging audience. These results are discussed considering previous evidence on the effect of feedback on performance. In addition, physiological results are interpreted considering the role of somatic marker theory in human performance.
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