Introversion, inhibition, and displayed anxiety: The role of error reactivity processes

Three studies involving 176 undergraduates examined the personality-related correlates of tendencies to slow down following errors in choice reaction time tasks. Such tendencies were hypothesized to tap individual differences in threat reactivity processes and therefore be relevant to the prediction of phobic-like fear (Study 1) and displayed anxiety as rated by informants (Studies 2 and 3). However, on the basis of the idea that high levels of extraversion may suppress threat reactivity processes, it was hypothesized that extraversion and post-error slowing tendencies would interact in predicting the dependent measures. The studies supported the latter interactive hypothesis in that post-error slowing tendencies were predictive of displayed anxiety at low, but not high, levels of extraversion. The discussion focuses on the respective roles of error-reactivity processes and extraversion in predicting behavioral inhibition and displayed anxiety. (C) 2006 Elsevier Inc. All rights reserved.