A tale of two representations: the misinformation effect and children's developing theory of mind

The present research investigates representational ability as a cognitive factor underlying the suggestibility of children's eyewitness memory. The misinformation effect is used as an index of children's suggestibility, and performance on the false belief task is used as an assessment of children's representational abilities (N = 117). Analyses that considered the effect of representational ability and general memory ability on children's susceptibility to misleading information showed that differences in representational ability and general memory ability predicted participants' susceptibility to misleading information. These results demonstrate that the eyewitness memory of children who lack either multirepresentational abilities, sufficient general memory abilities, or both (i.e., most 3- and 4-year-olds) is less accurate than the eyewitness memory of children with both multirepresentational abilities and sufficient memory abilities (i.e., most 6-year-olds and adults). Thus, it appears that the earliest age at which children's eyewitness memory can be considered to be similar to that of adults is 6 years of age, when children's mental representational abilities are similar to those of adults. These results suggest that one factor underlying children's vulnerability to misleading information is the number of representations of an event that they can simultaneously hold and compare.     

Children's Beliefs about Long-Term Retention

In 2 experiments, we examined pre-school, grade 1, and grade 3 children's metamemory about long-term retention. Specifically, we examined beliefs about the type of information most likely to be forgotten and beliefs about the impact of suggestions and retroactive interference on memory. Children made and explained paired-comparison judgments concerning the differential forgetting of peripheral versus central information, whether misinformation effects would arise from suggestions by others, and whether retroactive interference would arise from experiencing two similar events. The major findings were that ( a ) most children believed that events central to a story would be retained better than peripheral details; ( b ) in preschool and first grade, children believed that memory was invulnerable to suggestion (from a parent or a sibling), but in third grade, children believed suggestion could adversely affect memory; ( c ) most preschoolers believed that retroactive interference effects would not occur, whereas most first and third graders acknowledged that they would; ( d ) older children believed that both suggestibility and interference were less likely given a retention interval of several months compared to 1 day; and ( e ) in explaining their beliefs, children assigned sensory-behavioral factors a major causal role in determining what would be remembered over the long term. These results are discussed in terms of the development of beliefs about memory and the mind in general.     

Changes in Memory Prediction Accuracy: Age and Performance Effects

Memory performance predictions are subjective estimates of possible memory task performance. The purpose of this study was to examine possible factors related to changes in word list performance predictions made by younger and older adults. Factors included memory self-efficacy, actual performance, and perceptions of performance. The current study examined the age differences in a sample of 59 older adults (M = 76.83 years) and 52 younger adults (M = 21.19 years) on memory predictions and the accuracy of those predictions for both an immediate and delayed word recall task. While memory self-efficacy did not influence predictions for either group, perceived and actual performance at immediate recall was related to accuracy of predictions at delay for both groups. In addition, there was a significant age-by-time interaction such that older adults became more accurate over time whereas younger adults declined slightly in their prediction accuracy. These findings suggest that older adults are able to make accurate adjustments to their predictions based on both their perceived and actual performance on tasks.     

Consistency in children's reports of sexual and physical abuse

OBJECTIVE: The goal of the present study was to investigate the consistency of children's reports of sexual and physical abuse. METHOD: A group of 222 children, ages 3-16 years, participated. As part of legal investigations, the children were interviewed twice about their alleged experiences of abuse. The consistency of children's reports of sexual and physical abuse was examined in the two interviews, in relation to age, type of abuse, gender, memory, suggestibility, and cognitive capabilities. RESULTS: Older children were more consistent than younger children in their reports of sexual and physical abuse. Children were more consistent when reporting sexual abuse than physical abuse. Girls were more consistent than boys in sexual abuse reports. Consistency in sexual abuse reports was predicted by measures of memory, whereas consistency in physical abuse reports was not. Cognitive abilities did not predict consistency in sexual abuse or physical abuse reports. CONCLUSIONS: Implications for understanding children's allegations of abuse are discussed.     

Children's Use of Memory Editing Strategies to Reject Source Misinformation

This is the first reported study of children's use of two metacognitive strategies, recollection rejection and diagnostic monitoring, to reject misinformation. Recollection rejection involves the retrieval of details that disqualify an event, whereas diagnostic monitoring involves the failure to retrieve expected details. First (n = 56, age 7 years) and third graders (n = 52, age 9 years) witnessed a staged classroom interaction involving common and bizarre accidents, were presented with misinformation about the source of these events, and took a memory test. Both age groups used recollection rejection, but third graders were more effective. There was little evidence that diagnostic monitoring influenced responses for bizarre events, potentially because these events were not sufficiently bizarre in the context of the stereotype induction.     

The influence of self-efficacy and working memory capacity on problem-solving efficiency

We investigated the influence of self-efficacy beliefs and working memory capacity on mathematical problem-solving performance, response time, and efficiency (i.e., the ratio of problems solved correctly to time). Students completed a letter-recoding task (Experiment 1) or an operation span task (Experiment 2), rated their self-efficacy for solving mental multiplication problems, and then solved similar problems of varying complexity. We tested the motivational efficiency hypothesis, which predicted that motivational beliefs, such as self-efficacy, increase problem-solving efficiency through focused effort and strategy use. Experiments 1 and 2 reported a significant effect for self-efficacy on problem-solving performance and efficiency, but limited effects for time. A self-efficacy by working memory interaction occurred in Experiment 1, suggesting self-efficacy is beneficial as demands on working memory increase. These findings suggested that self-efficacy increased problem-solving efficiency through strategic performance rather than faster solution times, and were consistent with the motivational efficiency hypothesis.     

Individual differences in children''s and adults'' suggestibility and false event memory

In this article, we provide an overview of the emerging area of research concerning individual differences in children's memory, suggestibility, and false event reports. We begin with a discussion of recent research on children's false event memories. We then review research and theory concerning sources of individual differences in children's memory and suggestibility, including both cognitive (e.g., understanding of dual representations, source monitoring, imaginativeness, and event knowledge), and social-personality (e.g., attachment styles and temperament, parent-child communication, and sequelae of maltreatment) influences, and we highlight implications of these sources for children's false event reports. Finally, we examine how individual-difference factors proposed to mediate adults' false memories relate to those that may mediate children's false memories.     

Rules versus analogies in children's spelling: Evidence for task dependence

Two experiments were conducted to investigate developmental changes in children's use of rime-level units of sound-to-spelling correspondence when spelling nonwords under varying task demands. In Experiment 1, nonwords were presented in isolation. Older children spelled more of the nonwords by analogy than younger children. Experiment 2 adopted versions of the clue word technique employed by Goswami (1988a) and found that significantly more analogous, rime-based responses were given to the same stimuli in both younger and older children. However, fewer analogous responses were given when the salience of the clue word was reduced by presentation of multiple target nonwords. The results suggest that while children in the early stages of development possess the ability to use rime-based units in spelling, they do not always make spontaneous use of this analogy strategy. However, when the potential to use rime-based units is highlighted by task demands, as is the case in Experiment 2 when a clue word is provided, even young children make considerable use of analogy in spelling.     

The Development of Text Evaluation and Revision Skills

Children in elementary school settings generally do not revise frequently or skillfully, but relatively little is known about the source of their difficulty with revision. 3 studies were conducted to investigate children's developing ability to evaluate and revise problematic texts. In the first 2 studies, fourth-grade (10 years) and sixth-grade (12 years) students were asked to evaluate 3 types of problematic texts and suggest changes to make the texts easier to understand. In the third study, children were asked whether 4 types of revisions improved the comprehensibility of problematic stories. The results showed, first, that older children detected more of the text problems; second, that when younger children spontaneously detected a text problem they were as likely as older children to revise the text adequately; third, that younger children were less able than older children to revise text problems that they had originally overlooked; and, fourth, that younger children overestimated the informativeness of several types of revisions. The results suggest that developmental differences in constructive processing contribute to children's ability to detect and revise text problems.     

Trait Understanding or Evaluative Reasoning? An Analysis of Children''s Behavioral Predictions

This study tested the hypothesis that in predicting the future behavior of an actor, older children rely on trait inferences, whereas younger children rely on global, evaluative inferences. Vignettes depicting actors engaging in trait-relevant behaviors were presented to 5- and 6-year-olds (N = 67) and 9- and 10-year-olds (N = 71). For each actor, children made predictions of future behavior, evaluated the goodness and badness of the actor, and rated each actor on a relevant trait. A mediational analysis found that the behavioral predictions of older children were mediated solely by trait ratings, whereas those of younger children were mediated by evaluative ratings. Furthermore, unlike older children, younger children made trait-like predictions only when they made an evaluation of the actor. These results suggest that young children utilize evaluative reasoning when making behavioral predictions, and therefore rely on an inferential process that is distinct from that of older children.     

Studies of visual information processing in schizophrenic children

11 children meeting DSM III criteria for schizophrenia (mean age approximately 12 years), a group of normal children matched in mean mental age to the schizophrenic children, and a group of younger normal children (mean age 6.6 years) were administered a series of visual information-processing tasks in order to isolate core information-processing impairments in childhood onset schizophrenia. In Experiment 1, the schizophrenic children showed impairment relative to the MA-matched normals and performed at the level of the younger normal children on a forced-choice partial-report version of the span-of-apprehension task. Previous research has shown that this task is sensitive to dysfunction in both actively and partially recovered schizophrenic adults as well as a subset of foster children at risk for schizophrenia. Experiment 2 delimited the source of the information-processing impairment in schizophrenic children by ruling out a number of possible causes of impairment and suggesting that schizophrenic children use the same information-acquisition strategies as MA-matched children but less efficiently. Experiment 3 revealed that, consistent with the previous research, the schizophrenic children were comparable with the MA-matched controls on a full-report span-of-apprehension task that placed heavy demands on iconic and short-term memory. Both the schizophrenic and MA-matched normals performed significantly better than the younger normal children. Taken collectively, the results of the three experiments suggest that all groups of children engaged in a serial information-processing strategy while performing on the partial-report version of the span-of-apprehension task. The differential impairment of the schizophrenic children on the partial-report versions but not the full-report version of the span-of-apprehension task seems to reflect inefficiencies in controlled attentional processes that normally develop during middle childhood.     

Modification of Children's Gender-Stereotyped Behavior

2 studies of 8- and 11- year-old children explored factors related to willingness $$. Study I assessed baseline gender prefernces and gender-reiatd cognitive flexibility. While older children were found to have greater congnitive flexibility, and older boys had more stereotyped preferences, such questionnaire measures were not highly predictive of gender-atraditional behavior. Study 2 explored the parameters of vicarious social reinforcement in the symbolic modeling of gender-atraditional behavior. Peer reinforcers were more effective with younger children and on child-oriented tasks, whereas adult reinforcers were more effective with older children and on adult-oriented gender tasks. Both studies found that considerably more atraditional behavior was elicited with male examiners, suggesting more attention needs to be paid to this variable. Possible mechanisms underlying this effect are discussed.     

LIST FORMATS IMPROVE MEDICATION INSTRUCTIONS FOR OLDER ADULTS

We conducted a survey to compare a group of older adults’ and a group of younger adults’ beliefs regarding their own and each other's memory abilities. We also asked both age groups to identify items they believed older adults remember well. The survey was returned by 185 older (ages 60‐92) and 184 younger (ages 17‐39) participants. Of the 30 items we generated older adults reported that they would remember 23 better than younger adults would and 7 worse than younger adults would, and younger adults reported that they would remember 12 of the items better and 18 of them worse than older adults. Both age groups also generated many items that they believed older adults remember better than younger adults do. Finally, respondents generated items that they believed adults in their own age group had to remember routinely that adults in the other age group did not. The two groups agreed that older adults would spend more time and have more difficulty learning lines for presentation to an audience than would younger adults. Most of the older adults reported that their memories had changed; most of the younger adults reported that their memories had not changed. The belief that although older adults’ memory is worse than young adults’ they still remember some things better than the young is viewed as a realistic assessment, and implications for future research are discussed.     

Children’s Eyewitness Memory for Multiple Real‐Life Events

The present research examined the influence of prior knowledge on children’s free recall, cued recall, recognition memory, and source memory judgments for a series of similar real‐life events. Forty children (5–12 years old) attended 4 thematic birthday parties and were later interviewed about the events that transpired during the parties using the National Institute of Child Health and Human Development protocol. Of the events, half were generic in that they could have occurred at any birthday party, and half were specific to the theme of the party. Older children demonstrated more evidence of using gist‐based information to guide their memory performance than did younger children. However, younger children were able to use global gist to inform their source memory judgments, qualifying past word‐learning research.     

Extracting information from flowcharts and contingency statements: the effects of age and practice

Two studies are reported which aim to test the generality of the conclusions drawn from previous literature on the effectiveness of flowcharts with adult participants. In Experiment One secondary school children of different ages took part, and in Experiment Two a group of senior citizens participated. In both experiments, the effectiveness of a flow chart was compared with that of short contingency statements for finding a solution to a complex problem.
In Experiment One there was an initial advantage for the flow chart over the contingency statements in terms of speed but this was not the case in Experiment Two. Furthermore, the results showed there to be no significant differences in error rates between the two modes of presentation in both experiments. Participants who were particularly accurate responders did not respond any more slowly (or quickly) in Experiment One.
Practice at the task had marked effects. The differences in speed between the two modes of presentation on trial 1 were markedly reduced on trial 2 in both experiments and performance speeded up with practice. Age also played a part. In Experiment One, older children performed more rapidly than younger ones. In Experiment Two, the elderly participants found both formats very difficult to use. It seems that the generally accepted view that flowcharts are superior to contingency statements might not hold for younger participants or for the elderly, especially when accuracy is the main criterion.     

The Role of Semantic Context and Memory in the Acquisition of Novel Nouns

Three studies assessed the ability of 2-year-olds to use semantic context to infer the meanings of novel nouns and to retain those meanings a day later. In the first experiment, 24 2-year-olds heard novel nouns in sentences that contained semantically constraining verbs (e.g., "Mommy feeds the ferret"). They chose from a set of four novel object pictures to indicate the referent. Children learned a majority of the novel words. However, they occasionally failed to choose the correct object even when they understood the verb. Experiment 2 examined whether this was due to an inability to identify some of the pictures of novel objects. Experiment 3 tested 24 2-year-olds' memory for the newly learned nouns following a 24 hr delay and found significant retention. Results are discussed in terms of learning mechanisms that facilitate vocabulary acquisition in young children.     

A Cross-Sectional Test of Sign Creation by Children in the Gesture and Vocal Modalities

Naturalistic studies show that children can create language-like communication systems in the absence of conventional language. However, experimental evidence is mixed. We address this discrepancy using an experimental paradigm that simulates naturalistic sign creation. Specifically, we tested if a sample of 6- to 12-year-old children (52 girls and 56 boys drawn from an urban, predominantly white population in Western Australia) can comprehend and create novel gestural and vocal signs. Experiment 1 tested children’s ability to comprehend novel signs. Experiment 2 tested children’s ability to create novel signs. Results show that children can comprehend and create gestural and vocal signs, that communication is more successful in the gesture modality, and that older children outperform younger children.     

The Development of Memory and Processing Capacity

The assumption of some developmental theories that short-term memory is the workspace of higher cognitive processes, and consequently that span measures processing capacity, is claimed to be inconsistent with the working memory literature. 4 experiments, using children aged 5 to 12 years, contrast this theory with a model in which short-term memory and the processing space component of working memory are at least partly distinct. Experiments 1 and 2 varied processing load, holding duration constant. The processing load manipulation had little effect on recall of a short-term memory preload. Experiments 3 and 4 failed to support the prediction that the greater processing efficiency of older children would be associated with slower loss of information from short-term memory. Although counting and rehearsal rates increased with age, and correlated with span, they did not predict the rate of loss of memory preload due to intervening counting. The data suggest that effects obtained with short-term memory span do not provide clear indications of overall working memory development, because short-term memory span and the processing space component of working memory entail distinct systems.     

External and internal sources of variation in the creation of false reports in children

In this article, we describe several “families” of variables that may account for reliable variation in children's suggestibility. Specifically, we begin by discussing factors that are external to the organism (e.g., various forms of biased interviewing such as visualization inductions, accusatory tone, repeated yes/no questioning) that could explain why at any age studied, large suggestibility effects are produced in some situations but not in others. Following this, we discuss research on factors that are internal to the organism that may be at the source of individual differences in suggestibility-proneness (e.g., IQ, memory strength, relevant content knowledge). We conclude by postulating a framework in which multiple and complex interactions among cognitive, social, personality, and biological factors converge to make some children and some situations more or less suggestible than others.