Abstract
This study investigates a mechanism by which individual differences in person perception evolve in the real world. Previous research has demonstrated that in order to maintain a positive self-image, people assign generally greater weight to traits representing their strong points as compared to traits representing their shortcomings; this effect has been labeled the self-image bias. Using an unobtrusive measure of centrality, the present study shows how the centrality of "computer skills" increased (over a semester) for students receiving a high grade in an introductory computer science course, whereas it (slightly) decreases for students receiving a low grade. This effect was shown to be specific, that is, limited to computer skills (and related mathematical skills).
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