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Retrieval Effort Improves Memory and Metamemory in the Face of Misinformation Q ⇑ John B

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Retrieval Effort Improves Memory and Metamemory in the Face of Misinformation Q ⇑ John B Journal of Memory and Language 67 (2012) 45–58 Contents lists available at SciVerse ScienceDirect Journal of Memory and Language journal homepage: www.elsevier.com/locate/jml Retrieval effort improves memory and metamemory in the face of misinformation q ⇑ John B. Bulevich , Ayanna K. Thomas Department of Psychology,The Richard Stockton College of New Jersey, Galloway, NJ 08205, United States Department of Psychology,Tufts University, Medford, MA, United States article info abstract Article history: Retrieval demand, as implemented through test format and retrieval instructions, was var- Received 3 September 2011 ied across two misinformation experiments. Our goal was to examine whether increasing revision received 18 December 2011 retrieval demand would improve the relationship between confidence and memory perfor- Available online 21 January 2012 mance, and thereby reduce misinformation susceptibility. We hypothesized that improv- ing the relationship between confidence and memory performance would improve Keywords: controlled processes at retrieval. That is, when confidence and memory performance were Misinformation well calibrated, participants would be able to withhold incorrect responses if given the Metamemory opportunity. To examine the relationship between memory retention, confidence, and con- Confidence Aging trolled withholding, we compared older and younger adults’ performance on a forced Eyewitness memory memory test, where participants could not withhold responses, and on a free test, where Retrieval effort participants were encouraged to withhold responses. Confidence judgments were collected after forced responding. Retrieval demand was manipulated indirectly through type of test (cued recall vs. recognition) and directly through retrieval instructions. The results demon- strated that increasing retrieval demands improved memory retention, metamemorial monitoring and effective withholding. This was particularly pronounced when participants received misleading information. Finally, older adults required explicit direction to effec- tively monitor memory and institute successful controlled withholding. Ó 2012 Elsevier Inc. All rights reserved. Introduction achieve accuracy when faced with pressures to provide de- tails, when encouraged to guess, when presented with Consider the possibility of witnessing a crime. You are post-event information, and when discouraged to say ‘‘I most likely motivated to report what you have witnessed don’t know’’. The present study examined changes in youn- correctly. However, when interviewed by detectives, you ger and older adult eyewitness memory accuracy within find that in their attempts to ascertain a complete account the misinformation paradigm under conditions where peo- of the event, they encourage you to guess and persuade you ple were forced to respond to every question and under to answer questions even when you are unsure. While conditions where people were encouraged to exercise con- questioning, these detectives may also unwittingly intro- trol and withhold answers for which they may not be cer- duce information that may bias or distort your recollection. tain. We examined performance under forced-reporting Even the most earnest witness will find it difficult to instructions to ascertain memory retention of a witnessed event after the presentation of misleading post-event infor- q Portions of this research represents a dissertation for a Doctor of mation. We examined performance under free-reporting Philosophy degree at Washington University in St. Louis for the first instructions to determine whether the effect of misleading author. post-event information could be counteracted, thereby ⇑ Corresponding author. Address: The Richard Stockton College of New Jersey, Department of Psychology, 101 Vera King Farris Drive, Galloway, improving memory accuracy. Finally, we manipulated NJ 08205, United States. retrieval demands in order to improve memory retention E-mail address: [email protected] (J.B. Bulevich). and accuracy. 0749-596X/$ - see front matter Ó 2012 Elsevier Inc. All rights reserved. doi:10.1016/j.jml.2011.12.012 46 J.B. Bulevich, A.K. Thomas / Journal of Memory and Language 67 (2012) 45–58 Retention, monitoring, and control answers, they must be able to successfully inspect and monitor both the quality of evidence for a candidate In their classic study, Loftus, Miller, and Burns (1978) response and the bases for responding when recollection demonstrated that exposure to misleading information fails. Regarding the first point, when specific details are after witnessing an event reduced accuracy on a later mem- recollected, individuals often will determine that the epi- ory test. Variants of this general finding have since been sode was actually experienced. However, when conscious demonstrated in dozens of papers. Further, older adults recollection fails, individuals may use alternatives to recol- have been shown to be more susceptible to misinformation lection such as plausibility, familiarity, or accessibility than younger adults (Cohen & Faulkner, 1989; Coxon & (Jacoby & Hollingshead, 1990; Reder, Wible, & Martin, Valentine, 1997; Holliday et al., 2011; Karpel, Hoyer, & 1986; Thomas, Bulevich, & Chan, 2010). These alternatives, Toglia, 2001; Mitchell, Johnson, & Mather, 2003). A primary recruited under forced-responding test conditions, may be goal of the present research is to examine processes that less valid than detailed recollection and may lead to mem- underlie age-related increases in misinformation suscepti- ory inaccuracies. In the case of the misinformation effect, bility, in order to develop techniques to improve overall participants may respond with the misleading post-event memory performance. The Quantity-Accuracy Profile information because that information is easily accessed (QAP) methodology, developed by Koriat and Goldsmith (i.e., Thomas et al., 2010). When given the opportunity to (1996), allows us to examine the contributions of memory withhold during free-responding, those answers may be retention disruption, monitoring and/or control deficits, to omitted. That is, when given the opportunity to use moni- misinformation susceptibility. Specifically, this model toring and control processes, people may assess the effec- incorporates metacognitive processes into the assessment tiveness of retrieval strategies, and if allowed, may of memory performance. Retention is measured by the withhold items that were accessed with retrieval strategies forced-reporting memory test and is the proportion of judged to be less effective or reliable. By using the QAP forced report answers that are correct. Metacognitive mon- methodology, and comparing older to younger adults, we itoring is also measured during forced-reporting through examined the specific cognitive mechanisms that underlie the collection of confidence judgments for each answer. increased age-related susceptibility to misinformation Memory monitoring effectiveness can be captured by mon- (i.e., Mitchell, Johnson, & Mather, 2003). Further, we devel- itoring resolution, which allows for an evaluation of oped age-appropriate techniques to counteract the whether participants can distinguish correct from incorrect negative influence of misleading post-event information. responses. Control is measured during the free-reporting test, which follows forced-report. During this testing phase Age-related monitoring deficits participants are re-presented with responses given during the forced report phase. Participants are encouraged to Across the varied metacognitive monitoring tasks, older exercise control and withhold answers that may be associ- adults have sometimes shown age-related impairments ated with low confidence. By comparing performance dur- and, in other instances, age-equivalent performance. For ing the forced and free reporting stages we can assess both example, older adults have been shown to be less accurate control sensitivity and response criterion. That is, we can than younger adults when making episodic FOK predictions determine whether participants volunteered answers that (Perrotin, Isingrini, Souchay, Clarys, & Taconnat, 2006; accompany high confidence and determine the confidence Souchay, Isingrini, & Espagnet, 2000; Thomas, Bulevich, & point at which answers were volunteered. The former al- Dubois, 2011); however age equivalence has been demon- lows for the examination of the effect of monitoring on con- strated on semantic FOK tasks (Allen-Burge & Storandt, trol. Koriat and Goldsmith’s model makes the assumption 2000; Butterfield, Nelson, & Peck, 1988; Bäckman & that monitoring will affect control (see also, Nelson & Karlsson, 1985; Lachman, Lachman, & Thronesbery, 1979; Narens, 1990) and that individuals will withhold answers Marquie´ & Huet, 2000). Research suggests that the inconsis- associated with low confidence (Goldsmith & Koriat, 2008). tency of age-related impairment in monitoring tasks might Research suggests that misinformation susceptibility be due to the specific requirements of the task, with epi- may, in part, be the result of damage or occlusion to the sodic FOK judgment accuracy being more dependent on ac- memorial information. For example, the memory impair- cess to contextual episodic information (Souchay, Moulin, ment hypothesis (Loftus, 1979) states that the memory Clarys, Taconnat, & Isingrini, 2007; Thomas et al., 2011). trace for the original information is permanently altered In the present study, we were interested in the monitor- or destroyed by the misleading
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