Abstract
Both the distinctiveness heuristic and discrepancy detection hypotheses were investigated by independently manipulating both schema consistency and incidental suggestion in an eyewitness memory paradigm. A sequence of slides was shown, followed by a postevent questionnaire that contained both schema-typical and schema-atypical information. Fifteen minutes later, a source-monitoring task was administered. In Experiment 1, the proportion of source misattribution errors was greater for schematypical items than for schema-atypical items, and the proportion of errors on suggested items was greater than that on control items. Suggestion affected schema-typical and schema-atypical items equally, providing no support for the predictions of either hypothesis. In Experiment 2, the interval between the questionnaire and the source test was manipulated. The results of Experiment 1 were replicated under the short delay, whereas the proportion of errors increased under the long delay. An associative network model involving two types of episodic traces was used to account for the results.
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This research was supported by a Delo grant from the University of Tampa to S.T.H. and Grant AG13973 from the National Institute on Aging to C.M.
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Hekkanen, S.T., McEvoy, C. Source monitoring in eyewitness memory: Implicit associations, suggestions, and episodic traces. Memory & Cognition 33, 759–769 (2005). https://doi.org/10.3758/BF03193072
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DOI: https://doi.org/10.3758/BF03193072