The common interpretation of the positive correlation among self-efficacy, personal goals, and performance is questioned. Using self-efficacy theory (A. Bandura, 1977), it was predicted that cross-sectional correlational results were a function of past performance's influence on self-efficacy, and using control theory (W. T. Powers, 1973), it was predicted that self-efficacy could negatively influence subsequent performance. These predictions were supported with 56 undergraduate participants, using a within-person procedure. Personal goals were also positively influenced by self-efficacy and performance but negatively related to subsequent performance. A 2nd study involving 185 undergraduates found that manipulated goal level positively predicted performance and self-efficacy positively predicted performance in the difficult-goal condition. The discussion focuses on conditions likely to affect the sign of the relationship among self-efficacy, goals, and performance.

Although hundreds of studies have found a positive relationship between self-efficacy and performance, several studies have found a negative relationship when the analysis is done across time (repeated measures) rather than across individuals. W. T. Powers (1991) predicted this negative relationship based on perceptual control theory. Here, 2 studies are presented to (a) confirm the causal role of self-efficacy and (b) substantiate the explanation. In Study 1, self-efficacy was manipulated for 43 of 87 undergraduates on an analytic game. The manipulation was negatively related to performance on the next trial. In Study 2, 104 undergraduates played the analytic game and reported self-efficacy between each game and confidence in the degree to which they had assessed previous feedback. As expected, self-efficacy led to overconfidence and hence increased the likelihood of committing logic errors during the game.

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