We examined the moderating role of narcissisma personality variable associated with overconfidenceon the reciprocal relationship between self-efficacy and performance.Participants (N = 87) completed ten experimental trials on a driving simulator and we recorded participants' performance and self-efficacy beliefs across trials.Hierarchical linear modelling demonstrated that performance had a positive relationship with self-efficacy (supporting the majority of self-efficacy research).However, narcissism moderated this relationship.Specifically, when narcissism was high, performance had no relationship with subsequent self-efficacy.Conversely, self-efficacy had a significant negative relationship with performance and narcissism did not moderate this relationship.A secondary purpose of the study was to examine the role of narcissism in the relationship between self-efficacy and effort, and between effort and performance.Narcissism significantly moderated the relationship between self-efficacy and self-reported effort, and between self-reported effort and performance.
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Beattie et al. (2017) studied this question.