Abstract
A laboratory simulation was conducted in order to examine the influence of assessees' pattern of performance (ascending, consistently average, descending) on: (a) assessor ratings of assessee performance, (b) assessor attributionsfor assessee performance and, (c) rating accuracy. The influence of rating frequency (i.e., rating at the end of each exercise versus rating after all exercises have been concluded) on assessor accuracy was also examined. As predicted, assessees who exhibit different patterns of performance receive different ratings even though their overall level of performance is similar. More specifically, the ascending performer was rated higher in terms of leadership, decision-making, and persuasiveness, than either the consistently average or descending performer. It was alsofound that descending and ascending performance was attributed more to motivation causes than consistently average performance, and that descending performance was attributed more to ability causes (i.e., a lack of ability) than either the ascending or consistently average performer. With respect to rating accuracy, it was found that descending and ascending performance was rated more accurately than consistently average performance and that subjects who made ratings at the conclusion of each exercise did not make more accurate overall assessment ratings than those subjects who made overall assessment ratings only. Instead, it was found that the accuracy of overall assessment ratings was greatest when ratings collected after each exercise were averaged. The implications of these results for assessment center procedures is discussed.
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