To test the hypothesis that an increase in incentive results in increased perceptual selectiveness favoring those parts of the stimulus field interpreted by the S as most relevant to the expected reward, a modified pursuit apparatus was used as a continuous central-tracking task. A low-incentive condition was produced by telling Ss that the trials were practice, and the high-incentive condition was produced by offering a sliding-scale bonus of money for good performance. The results were in agreement with the prediction that a high-incentive condition facilitates performance of a central task, but generally interferes with the performance of peripheral tasks. (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1952 American Psychological Association.
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