Psychotropic placebos reduce the misinformation effect by increasing monitoring at test |
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Authors: | Parker Sophie Garry Maryanne Engle Randall W Harper David N Clifasefi Seema L |
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Affiliation: | School of Psychology, Victoria University of Wellington, Wellington, New Zealand. |
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Abstract: | A psychotropic placebo can help people resist the misinformation effect, an effect thought to be caused by a shift to more stringent source monitoring. When this shift occurs has been unclear. To address this issue we gave some people - but not others - a phoney cognitive-enhancing drug we called R273. Shortly afterwards, everyone took part in a misinformation effect experiment. To gather evidence about source monitoring we surreptitiously recorded time to read the misleading postevent narrative, and response time at test. Our findings suggest that people shifted to more stringent source monitoring at test. Moreover, people with higher working memory capacity (WMC) performed better than people with lower WMC - but only when they were told they had received R273, a finding that fits with research showing that WMC can confer advantages in situations demanding effortful control, but not when automatic heuristics suffice. |
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