PMID: 11913748Mar 27, 2002Paper

Intended and unintended effects of explicit warnings on eyewitness suggestibility: evidence from source identification tests

Memory & Cognition
K L Chambers, M S Zaragoza

Abstract

Previous studies have shown that source identification (ID) tests reduce, and in some cases eliminate, eyewitness suggestibility errors. The present study showed that the suggestibility errors participants committed on a source ID test were further reduced when they were given the explicit postwarning that the experimenter was trying to trick them. These postwarnings reduced suggestibility to the same extent as prewarnings, and they did so for both once and repeatedly suggested items. In addition, the benefits of the pre- and postwarnings persisted when participants were retested 1 week later, but only if the suggestions had been repeated. For once-suggested items, the warning had the unintended effect of improving old/new recognition of the suggested information at retest, an effect that offset the improvements in source discrimination accuracy conferred by the warning. The advantages of using source ID tests for investigating group differences in eyewitness suggestibility are discussed.

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Citations

Nov 30, 2006·Memory & Cognition·Elizabeth J Marsh, Lisa K Fazio
Nov 26, 2009·Memory & Cognition·Glen E BodnerTanjeem Azad
Dec 16, 2010·Memory & Cognition·Ullrich K H EckerDavid T W Tang
Jan 26, 2011·Memory & Cognition·Ainat Pansky, Einat Tenenboim
Jun 6, 2014·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Micah G EdelsonTali Sharot
Jul 19, 2014·Memory & Cognition·Katya T NumbersVladimir A Perga
Apr 28, 2016·Behavioral Sciences & the Law·Pedro M Paz-Alonso, Gail S Goodman
Mar 7, 2014·Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition·Jodi PriceMichael L Mueller
Apr 13, 2017·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·Katja VolzWolfgang Ambach
Dec 1, 2012·Psychological Science in the Public Interest : a Journal of the American Psychological Society·Stephan LewandowskyJohn Cook
Sep 2, 2020·Proceedings of the National Academy of Sciences of the United States of America·Jessica M KaranianElizabeth Race
Mar 24, 2021·Proceedings of the National Academy of Sciences of the United States of America·Aileen OeberstHartmut Blank
Apr 11, 2021·Proceedings of the National Academy of Sciences of the United States of America·Michael A Cacciatore

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