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| Research article summary (published 30 Aug 2009): |
Global subjective memorability and the strength-based mirror effect in recognition memory.
Full Abstract
Between-list manipulations of memory strength through repetition commonly generate a mirror effect, with more hits and fewer false alarms for strengthened items. However, this pattern is rarely seen with within-list manipulations of strength. In three experiments, we investigated the conditions under which a within-list mirror effect of strength (items presented once or thrice) is observed. In Experiments 1 and 2, we indirectly manipulated the overall subjective memorability of the studied lists by varying the proportion of nonwords. A within-list mirror effect was observed only in Experiment 2, in which a higher proportion of nonwords was presented in the study list. In Experiment 3, the presentation duration for each item (0.5 vs. 3 sec) was manipulated between groups with the purpose of affecting subjective memorability. A within-list mirror effect was observed only for the short presentation durations. Thus, across three experiments, we found the within-list mirror effect only under conditions of poor overall subjective memorability. We propose that when the overall subjective memorability is low, people switch their response strategy on an item-by-item basis and that this generates the observed mirror effect.
Author information
Author/s: Bruno, Davide (D); Higham, Philip A (PA); Perfect, Timothy J (TJ);
Affiliation: University of Southampton, Southampton, England. davbruno(-atsign-)psych.umass.edu
Journal and publication information
Publication Type: Journal Article; Research Support, Non-U.S. Gov't
Journal: Memory & cognition (Mem Cognit), published in United States. (Language: eng)
Reference: 2009-Sep; vol 37 (issue 6) : pp 807-18
Dates: Created 2009/08/14; Completed 2009/10/19;
PMID: 19679860, status: MEDLINE (last retrieval date: 10/19/2009, IMS Date: )
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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