Research has suggested that introverts and extraverts differ in their responses to performance feedback. The present study examined the effect on introverts and extraverts of a short-term memory task. Subjects (ns = 8) were randomly assigned to one of three feedback conditions: positive, negative, or control. On posttest, introverts performed better than extraverts regardless of feedback condition. These findings suggest that individual differences in introversion-extraversion mediate differences in performance through subjective arousal, namely, state-anxiety.
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