Self-Focus and Cardiovascular Effects of Stressor Anticipation and Active Coping: The Moderating Influence of Trait Social Anxiety

摘要

Background:Self-focused attention has been found to facilitate task engagement and cardiac activity in active performance situations. According to theories on self-awareness this facilitating effect might be confined to individuals with favorable outcome expectancies, though.Objective:To provide information on this issue, the present study evaluated the moderating influence of trait social anxiety, a dispositional indicator of impaired confidence. In extension of prior research, effects of enhanced self-awareness were assessed during both anticipation and performance of an active social stressor.Method:Sixty normotensive female students characterized as either high or low in trait social anxiety engaged in an evaluative speaking task either in the context of high or low self-awareness.Results:The moderating influence of social anxiety was found to vary with type of demand. During passive stressor anticipation, self-focus augmented distress-related vascular reactivity in high but not in low socially anxious individuals. During speech preparation self-focus was found to facilitate task engagement and cardiac reactivity in low socially anxious individuals, whereas high anxious showed some withdrawal. Greater self-awareness during speech performance elicited cardiac increases in both social anxiety groups. However, among high anxious individuals this sustained engagement was accompanied by increased negative affect and negative self-evaluations.Conclusion:These findings seem to suggest that only in high socially anxious individuals heightened self-awareness may contribute to dysfunctional cardiovascular and psychological processes.