ROC curves show that the revelation effect is not a single phenomenon |
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Authors: | Verde Michael F. Rotello Caren M. |
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Affiliation: | (1) Department of Psychology, University of Washington, Box 351525, 98195 Seattle, WA;(2) University of California, Irvine, California |
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Abstract: | The revelation effect describes the increased tendency to call itemsold when a recognition judgment is preceded by an incidental task. In theory, the effect could come about either from a more liberal response bias or from a change in underlying memory sensitivity. Using analyses of receiver-operating characteristic curves, we show that the revelation effect occurs for each of these reasons, but under different empirical conditions. A shift in response bias fully accounts for the revelation effect when revealed items are unrelated to the subsequent recognition probes. However, a change in memory sensitivity contributes to the effect when revealed items are identical to the recognition probes. Thus, the revelation effect encompasses at least two distinct phenomena. |
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