Heather L. Price

Children's memory for complex autobiographical events: Does spacing of repeated instances matter?

Often, when children testify in court they do so as victims of a repeated offence and must report details of an instance of the offence. One factor that may influence childrens ability to succeed in this task concerns the temporal distance between presentations of the repeated event. Indeed, there is a substantial amount of literature on the “spacing effect” that suggests this may be the case. In the current research, we examined the effect of temporal spacing on memory reports for complex autobiographical events. Children participated in one or four play sessions presented at different intervals. Later, children were suggestively questioned, and then participated in a memory test. Superior recall of distributed events (a spacing effect) was found when the delay to test was 1 day (Experiment 1) but there was little evidence for a spacing effect when the delay was 1 week (Experiment 2). Implications for understanding childrens recall of repeated autobiographical events are discussed.

Eyewitness identification across the life span: A meta-analysis of age differences.

Lineup identifications are often a critical component of criminal investigations. Over the past 35 years, researchers have been conducting empirical studies to assess the impact of witness age on identification accuracy. A previous meta-analysis indicated that children are less likely than adults to correctly reject a lineup that does not contain the culprit, but children 5 years and older are as likely as adults to make a correct identification if the culprit is in the lineup (Pozzulo & Lindsay, 1998). We report an updated meta-analysis of age differences in eyewitness identification, summarizing data from 20,244 participants across 91 studies. Contrary to extant reviews, we adopt a life span approach and examine witnesses from early childhood to late adulthood. Childrens increased tendency to erroneously select a culprit-absent lineup member was replicated. Children were also less likely than young adults to correctly identify the culprit. Group data from culprit-absent and culprit-present lineups were used to produce signal detection measures, which indicated young adults were better able than children to discriminate between guilty and innocent suspects. A strikingly similar pattern emerged for older adults, who had even stronger deficits in discriminability than children, relative to adults. Although identifications by young adults were the most reliable, identifications by all witnesses had probative value.

BatMon II: children's category norms for 33 categories.

Four hundred forty-eight children 3–12 years of age generated category exemplars for 33 distinct categories. The percentage of the participants reporting each exemplar, the percentage of the participants reporting each exemplar first, the percentage of the participants reporting each exemplar across age groups (3–5 years, 6–8 years, and 9–12 years), and the mean rank of each exemplar are presented. A full version of the 29 category norms may be downloaded from www.psychonomic.org/archive.

Children's recall of emotionally arousing, repeated events: A review and call for further investigation

The influence, if any, of emotional arousal on memory is a controversial topic in the literature. Much of the research on memory for emotionally arousing events has focused on a few specific issues (e.g., differences in types of details recalled in emotionally arousing and neutral events; increasing ecological validity). Although gaining more recent attention, a neglected area in the literature has been memory for instances of repeated, emotionally arousing events. This issue has important implications for understanding childrens ability to recall events in a forensic setting. We review existing findings on memory for emotionally arousing events in general and particularly in children, childrens memory for events that occur repeatedly, and then discuss the scarce research on repeated emotionally arousing events and the need for further research in this area. We conclude that although it is clear that children are capable of accurately reporting arousing and repeated experiences, it is also apparent that circumstances both within and outside the control of investigative interviewers influence this ability.

Predicting expert social science testimony in criminal prosecutions of historic child sexual abuse

Purpose. Recently courts in several Common Law jurisdictions have been faced with the daunting task of adjudicating criminal complaints of child sexual assault that are alleged to have occurred in the distant past (historic child sexual abuse; HCSA). In the present data set, alleged offences ended between 2 and 48 years before the trial. These cases, which involve claims of repressed memory and continuous memory for the offence, raise many issues that hitherto had only rarely been faced by criminal courts and that are within the realm of issues studied by social scientists. In this paper we explore variables that predict the presence of a social science expert, called by the prosecution or the defence or an expert called by both sides. Methods. A total of 2,064 actual criminal cases involving HCSA were coded on a variety of variables that were then used to predict the presence of an expert at trial and to predict the presence of an expert to evaluate the perpetrator for sentencing. Results. Six variables predicted the presence of an expert at trial: offence description, frequency of abuse, complainant/accused relationship, complainant age, presence of repression, and complainant gender. Seven variables predicted the presence of an expert at sentencing: offence description, frequency of abuse, length of delay to trial, presence of threat, trial date, plea, and age difference between complainant and accused. Conclusions. We use these archival data to generate hypotheses concerning the observed predictors of the use of expert testimony by courts in HCSA cases. The objective is to encourage more controlled studies of the particular case characteristics about which courts seek guidance from social scientists.

What children recall about a repeated event when one instance is different from the others.

This research examined whether a memorable and unexpected change (deviation details) presented during 1 instance of a repeated event facilitated childrens memory for that instance and whether a repeated event facilitated childrens memory for deviation details. In Experiments 1 and 2, 8-year-olds (N = 167) watched 1 or 4 live magic shows. Children were interviewed about the last or only show, which did or did not contain deviation details. Children reported more accurate information about the instance when deviation details were presented than when they were not, but repeated experience did not improve memory for deviation details. In Experiment 3, children (N = 145; 6- to 11-year-olds) participated in 4 magic shows and answered questions about each one. Deviation details were manipulated such that they caused a change in how the show was experienced (continuous) or had no such effect on the rest of the show (discrete). Younger, but not older, childrens recall of all instances improved when a continuous deviation occurred compared to no deviation. Implications for how deviation details are represented in memory, as well as forensic applications of the findings, are discussed. (PsycINFO Database Record

Change detection inflates confidence on a subsequent recognition task

A face viewed under good encoding conditions is more likely to be remembered than a face viewed under poor encoding conditions. In four experiments we investigated how encoding conditions affected confidence in recognising faces from line-ups. Participants performed a change detection task followed by a recognition task and then rated how confident they were in their recognition accuracy. In the first two experiments the same faces were repeated across trials. In the final two experiments novel faces were used on each trial. Target-present and target-absent line-ups were utilised. In each experiment participants had greater recognition confidence after change detection than after change blindness. The finding that change detection inflates confidence, even for inaccurate recognitions, indicates recognition certainty can be a product of perceived encoding conditions rather than authentic memory strength.

‘Objection, Your Honor! Television is not the relevant authority.’ Crime drama portrayals of eyewitness issues

Abstract Using a coding protocol based on a juror knowledge survey, this study focused on identifying changes, if any, in the prevalence and type of media portrayals of eyewitness issues over time in television crime dramas. Content of 263 episodes of 12 popular television crime dramas from the 1980s, 1990s, and 2000s were coded for 35 specific eyewitness issues with respect to: (1) presence or absence, (2) type (e.g. explicit, implicit), and (3) meanings and implications of these presentations for eyewitness accuracy. Results demonstrated portrayals of eyewitness issues, and the broad topic of memory, generally increased since the 1980s, with prevalence highest in episodes from the 1990s. With rare exceptions, the meanings and implications of the presentation were not made explicit, but were implicitly depicted, inferred from character dialogue or episode events. In general, media portrayals failed to depict a relationship between eyewitness variables and memory accuracy, and, as a result of their omission, the relationships typically differed from those agreed upon by experts.

Suspect filler similarity in eyewitness lineups: a literature review and a novel methodology

Eyewitness lineups typically contain a suspect (guilty or innocent) and fillers (known innocents). The degree to which fillers should resemble the suspect is a complex issue that has yet to be resolved. Previously, researchers have voiced concern that eyewitnesses would be unable to identify their target from a lineup containing highly similar fillers; however, our literature review suggests highly similar fillers have only rarely been shown to have this effect. To further examine the effect of highly similar fillers on lineup responses, we used morphing software to create fillers of moderately high and very high similarity to the suspect. When the culprit was in the lineup, a higher correct identification rate was observed in moderately high similarity lineups than in very high similarity lineups. When the culprit was absent, similarity did not yield a significant effect on innocent suspect misidentification rates. However, the correct rejection rate in the moderately high similarity lineup was 20% higher than in the very high similarity lineup. When choosing rates were controlled by calculating identification probabilities for only those who made a selection from the lineup, culprit identification rates as well as innocent suspect misidentification rates were significantly higher in the moderately high similarity lineup than in the very high similarity lineup. Thus, very high similarity fillers yielded costs and benefits. Although our research suggests that selecting the most similar fillers available may adversely affect correct identification rates, we recommend additional research using fillers obtained from police databases to corroborate our findings.

True (but not false) memories are subject to retrieval-induced forgetting in children.

Veridical and false memories of children aged 6 to 15 years were studied in two experiments with the retrieval-induced forgetting paradigm. Using the Deese-Roediger-McDermott (DRM) false memory word lists, childrens reports of true, but not false, memories showed evidence of retrieval-induced forgetting. These differences were observed across delays as long as 2 days following word list presentation. The lack of observation of retrieval-induced forgetting in childrens false memories provides evidence that a key assumption in the theory of retrieval-induced forgetting, cue independence, might not consistently apply. These experiments underscore the need for both practical and theoretically motivated study of true and false memories.