Age differences in eyewitness testimony

This study examined age differences in eyewitness testimony. Children, three and six years of age, and adults interacted with an unfamiliar man for 5 minutes. Four or five days later, the witnesses answered objective and suggestive questions, recalled what happened, and tried to identify the confederate from a target-present photo line-up. The adults and 6-year-olds did not differ in their ability to answer objective questions or identify the confederate, but 6-year-olds were more suggestible than adults and recalled less about the event. Compared to the older age groups, the 3-year-olds answered fewer objective questions correctly, recalled little about what happened, and identified the confederate less frequently. In addition, they were the most suggestible. The experiment extends our knowledge of children's ability to provide accurate eyewitness reports to a very young age group and to a situation in which participants are not merely bystander witnesses but instead directly interact with the confederate.     

Children's identification of unfamiliar voices on both target-present and target-absent lineups

ABSTRACT

A robust finding from the eyewitness literature is that children are as accurate as adults on target-present lineups from the age of five years, whereas they continue to make an erroneous false positive identification from a target-absent lineup up until around fourteen years of age (Pozzulo, J. D., & Lindsay, R. C. L. (1998). Identification accuracy of children versus adults: a meta-analysis. Law and Human Behavior, 22(5), 549–570). The current study explores whether the same pattern occurs when voices are used instead of faces. A total of 334 participants from six age groups (6–7-year-olds, 8–9-year-olds, 10–11-year-olds, 12–13-year-olds, 14–15-year-olds and adults) listened to a 30 second audio clip of an unfamiliar voice and were then presented with either a six person target-present or target-absent voice lineup. Overall, participants were more accurate with target-present than target-absent lineups. Moreover, performance on target-present lineups showed adult-like levels of attainment by 8–9 years of age. In contrast, performance on target-absent lineups was extremely poor, with all age groups tending to make a false identification. Confidence was higher when participants made correct rather than incorrect decisions for both types of lineup and this did not change with increasing age. Given these results, both child and adult earwitness evidence needs to be treated with considerable caution.     

Age trends in eye-witness suggestibility and compliance

Abstract

This paper addresses two issues: whether there is a developmental trend in suggestibility to misleading post-event information, and whether suggestibility can be reduced by use of part of the cognitive interview. Twenty participants from each of three age groups (four-to-five year olds, eight-to-nine year olds and adults) watched a filmed event, and half of the participants in each age group were subsequently asked to recall everything they had seen using a method derived from the cognitive interview procedure. Following this, all participants were asked questions about the filmed event, some of which incorporated misleading information. Twenty four hours later the witnesses were interviewed again, this time critical questions were included about the truth of the presuppositions introduced in the initial questionnaire. It was found that although the eight-to-nine year olds were more suggestible than adults, the apparent greater suggestibility of very young children (four-to-five years) could potentially be explained in terms of heightened compliance to the perceived demands of the interviewer. The 'be complete' part of the cognitive interview only produced an improvement in performance for the eight-to-nine year olds.     

Confessions and denials and the relationship with personality

Purpose. The main aim of the study was to examine the reasons and personality factors associated with confessions and denials. It was hypothesized that antisocial personality traits and active involvement in criminal behaviour would distinguish true confessors and true deniers from false confessors and false deniers. Method. The participants were 1,080 students in further education in Iceland. Each was asked about false admissions made to teachers and parents in the past, as well as about confessions or denials (true and false) made to the police during questioning, and the reasons for having responded in the way they did. The participants also completed questionnaires relating to offending, personality and self‐esteem. Results. One‐quarter (25%) of the participants stated that they had in the past been interrogated by the police in relation to a suspected offence, of whom 59% said they had confessed. A small minority of those interrogated (3.7%; 1% of the total sample) claimed to have made false confessions to the police, whereas 10% claimed to have made false confessions to teachers or parents. Males were significantly more likely to report false confessions than females. False confessions and false denials were significantly associated with antisocial personality traits, with Eysenck Personality Questionnaire Psychoticism being the single best predictor. Those participants who made true confessions and true denials were most normal in their personality. Conclusions. Personality is a significant predictor of who makes false confessions and false denials.     

Differences in suggestibility between 5–6 and 10–11 year olds: The relationship with self confidence

Abstract

Differences in suggestibility and recall between 5–6 and 10–11 year olds were investigated. It was hypothesized that younger children would be more suggestible than older children and that differences in self confidence between older and younger children would influence these differences. It was also predicted that older children would recall more information than younger children, and that this age difference would be less strongly influenced by self confidence. Forty-one 5 and 6 and fifty-six 10 and 11 year olds were interviewed about a video they had witnessed. Several factual and misleading questions were asked, and the percentage of correct answers to the factual questions (to measure recall) and the percentage of incorrect answer to the misleading questions (to measure suggestibility) were calculated. The level of self confidence of the children was measured with six items of the Behavioural Academic Self Esteem Scale (BASE), reflecting self confidence. The outcomes supported the hypotheses: Younger children were more suggestible than older children and this difference disappeared when controlled for self confidence. Older children gave mere information about the event than younger children, and these age differences were, to much less extent, influenced by their self confidence.     

Home is where the heart lies? A study of false address giving to police

Purpose. The purpose of the present paper is to identify the cognitive processes associated with the construction of a false address, and explore how this can be used to identify and trace those who give a false address to police. It is hypothesized that most people find it difficult to spontaneously fabricate an entire false address. As a consequence they provide identifiable clues as to the real address being concealed. Methods. A quasi‐experimental research design was employed where 142 students were first asked to generate a false address and second to analyse it to ascertain how random they considered it to be. Results. Participants, overwhelmingly, stated that the false addresses generated contained elements of truth which could be used to identify their real place of residence. Although most participants appeared capable of generating bona fide false postcodes, comparison with an official UK postcode list identified over 60% did not actually exist. Conclusion. People generally rely on pre‐existing address knowledge as opposed to random generation, with the latter appearing more cognitively effortful. As such, they often unwittingly provide clues to the real address being concealed, therefore, affording increased possibilities in identifying them as liars at point of contact and in tracing them after the fact.     

Bone age assessment: the applicability of the Greulich-Pyle method in eastern Turkish children

The aim of this study was to investigate whether or not the Greulich-Pyle (GP) method is adequate for Turkish children. A group of 767 individuals (425 girls and 342 boys) between 7 and 17 years were studied. Bone age (BA) from plain radiographs of left hands and wrists by GP standards was estimated. The total mean differences between BA and chronological age (CA) for girls and boys were found to be 0.20 and -0.13 years, respectively. There were significant differences between BA and CA in age groups 7-, 8-, 10-, 11-, 12-, 13-, 15-, and 16-year-olds for girls and 7-, 10-, and 12-year-olds for boys. The results of this study suggest that the mean differences between BA and CA are low enough to be of no practical significance, and thus, for the time being unless any other methods will be proved more useful, this method could be used in all age groups.     

The Effect of Image Quality and Forensic Expertise in Facial Image Comparisons

Images of perpetrators in surveillance video footage are often used as evidence in court. In this study, identification accuracy was compared for forensic experts and untrained persons in facial image comparisons as well as the impact of image quality. Participants viewed thirty image pairs and were asked to rate the level of support garnered from their observations for concluding whether or not the two images showed the same person. Forensic experts reached their conclusions with significantly fewer errors than did untrained participants. They were also better than novices at determining when two high‐quality images depicted the same person. Notably, lower image quality led to more careful conclusions by experts, but not for untrained participants. In summary, the untrained participants had more false negatives and false positives than experts, which in the latter case could lead to a higher risk of an innocent person being convicted for an untrained witness.     

Inducing resistance to suggestibility in children

Thirty 7-year-olds, 30 12-year-olds, and 39 adults were administered the Gudjonsson Suggestibility Scale, which consists of a story followed by 20 questions, 15 of which are misleading. After subjects were told that their answers were not all correct, the questions were readministered to look for shifts. Approximately half of the subjects in each age group had been warned that the questions were difficult or tricky and that they should only answer with what they confidently remembered. Results indicated that younger children recalled less of the story and were more likely to acquiesce to leading questions than older children and adults. Children also changed more of their answers upon the second questioning. Recall was negatively correlated with both acquiescence to leading questions and likelihood of changing answers, even within age groups. The warning significantly reduced the effect of misleading questions across all age groups.We gratefully acknowledge the assistance of Jeffery N. Swartwood in analyzing the data and the staff, parents, and students of St. Jude School for their cooperation.     

“I’d Know a False Confession if I Saw One”: A Comparative Study of College Students and Police Investigators

College students and police investigators watched or listened to 10 prison inmates confessing to crimes. Half the confessions were true accounts; half were false—concocted for the study. Consistent with much recent research, students were generally more accurate than police, and accuracy rates were higher among those presented with audiotaped than videotaped confessions. In addition, investigators were significantly more confident in their judgments and also prone to judge confessors guilty. To determine if police accuracy would increase if this guilty response bias were neutralized, participants in a second experiment were specifically informed that half the confessions were true and half were false. This manipulation eliminated the investigator response bias, but it did not increase accuracy or lower confidence. These findings are discussed for what they imply about the post-interrogation risks to innocent suspects who confess.     

Police officers', social workers', teachers' and the general public's beliefs about deception in children,adolescents and adults

Purpose . The present survey examined the beliefs of different occupational groups (police officers, social workers, teachers) and members of the general public about (i) cues to deception in young children (5‐ to 6‐year‐olds), adolescents (14‐ to 15‐year‐olds) and adults, and (ii) the underlying processes (emotions, cognitive load and attempted verbal and behavioural control), which may explain why cues to deceit do occur. Method . Two hundred and six participants completed a ‘cues to deception’ and ‘processes underlying deception’ questionnaire for three different age groups (young children, adolescents and adults). Results and discussion . The survey revealed that participants believed that liars are nervous, have difficulties in formulating their lies and do not fully endorse their lies. In general, participants associated more cues with deception than seems justified on the basis of deception literature. Participants generally associated the same cues to deceit for all three age groups but, when differences between age groups did emerge, this was most likely to be amongst teachers. Although participants believed that adults control their speech and behaviour more when they lie than adolescents and young children do, this did not result in participants believing that adults exhibit fewer cues to deceit. No major occupational differences emerged, although out of the four participating groups, teachers were most likely to associate cues with deception in young children.     

未成年人案件中两种骨龄测定法的应用价值的初步研究

目的研究未成年人骨龄与实际年龄和刑事责任年龄间的关系,探讨顾氏图谱法、李果珍骨龄百分计数法在未成年人涉嫌犯罪案件中的应用价值。方法选择33位身体健康、发育正常的未成年人(12～19岁),拍摄左手腕部X线片,分别使用顾氏图谱法、李果珍骨龄百分计数法测定每张X线片的骨龄,再将骨龄与受试者实际年龄比较,用行平均分检验分析两法推测未成年人实际年龄的精确性,用Pearson检验分析两法推断未成年人刑事责任年龄的准确性。结果李果珍骨龄百分计数法推测实际年龄的精确性高于顾氏图谱法(P<0.005);而二者推断刑事责任年龄的准确率分别为90.91%和78.79%,统计学分析结果无显著性差异(P>0.1)。结论两种方法均适用于未成年人涉嫌犯罪案件,基本满足法律实施的要求。     

Juror reactions to child victim witnesses

Trial variables that might affect juror decisions were examined in two experiments. In Experiment 1, the impact of (1) corroboration, (2) type of case (civil vs. criminal), and (3) victim age (6. 9, or 12 years) was examined. Participants (N=379) read a trial summary describing a wrongful injury or sexual abuse case and were asked to make decisions regarding the case. Results revealed a significant interaction between age and corroboration. Corroboration increased the number of guilty verdicts for the 6- and 12-year-olds, yet had little impact in the case with the 9-year-old. the type of the case did not interact with child age in affecting jurors' decisions. Experiment 2 examined the role of a child's age more systematically. The trial summary described the corroborated sexual abuse case (utilized in Experiment I) and varied the age of the victim from 6 to 14 years. Analyses revealed that number of guilty verdicts and credibility decreased with age, whereas amount of blame attributed to the victim increased with age. Reasons for the negative age bias are discussed.     

The identification of individuals by observational gait analysis using closed circuit television footage: Comparing the ability and confidence of experienced and non-experienced analysts

Gait is known to have been used as evidence since 1839, initially based on the apocryphal belief that a person can be identified by their gait. The potential uniqueness of gait has yet to be proven, and therefore gait is currently considered to be a contributor to identification rather than a method of identification. In 2013 Birch et al. [1] published the findings of an investigation into the ability of individuals with experience in gait analysis to identify people by observing features of gait recorded by closed circuit television cameras. The study showed that the participants made correct decisions in 71% of cases, significantly better than would have been expected to have occurred by chance. However, the presentation of gait evidence is not limited to witnesses with experience in gait analysis. This study compared the abilities and confidence of participants with experience in gait analysis with those of participants with no experience of gait analysis using the methodology of Birch et al. 2013 [1]. The results showed no statistically significant difference in the number of correct identification decisions made by the two groups of participants, although the participants with experience of gait analysis made slightly more false negative than false positive decisions, whereas the participants with no experience made more false positive than false negative decisions. The participants with no experience in gait analysis reported significantly more confidence in their decisions than did the participants with experience (p < 0.05). The results suggest that lay people giving gait based evidence are likely to be more confident in their assertions as to identity based on that evidence, than would a witness with experience of gait analysis. Careful consideration therefore needs to be given to the submission of gait based evidence by lay witnesses.     

Effect on Eyewitness Accuracy When Witnesses Are Told versus Not Told That They Will Be Allowed a Second Viewing

Lindsay, Lea, and Fulford (J Appl Psychol 76:741–745, 1991) found that false identifications increased, correct rejections decreased, and correct identifications minimally increased when witnesses were allowed a second viewing of a sequential lineup. We conducted a similar study in which we allowed mock witnesses a second viewing of a sequential lineup. Results indicated that participants who were allowed a second viewing made mostly incorrect identifications. Participants correctly identified the perpetrator more often when they were not told in advance that they would have a second viewing than when they were told. Additionally, those participants who were told that they would be allowed a second viewing incorrectly rejected the lineup more often than those who were not told. The findings yielded conclusions similar to those of Lindsay et al. (J Appl Psychol 76:741–745, 1991) suggesting that witnesses should not be allowed to view the lineup a second time. The results also suggest that, if a repeated lineup is used, witnesses should not be informed of that in advance.     

The developmentally handicapped witness

This study compared the ability of 30 developmentally handicapped (DH) and 30 nonhandicapped individuals in their ability to report on witnessed events. Participants watched a film clip and were asked to respond to five different types of questions about it. Misleading or leading questions were embedded in three of the question types Results indicated that in response to free recall and very general questions, DH participants did not provide as complete responses as did nonhandicapped participants, although the information provided by both groups tended to be quite accurate. Both groups, and particularly DH individuals, were less accurate in responding to more focused shortanswer recall questions. In response to correct leading specific and statement questions, requiring recognition of the information provided, DH and control participants were comparable in their performance. DH participants had greater difficulty with misleading recall questions and false leading specific and statement questions. Results are discussed in terms of optimizing eyewitness accuracy in DH individuals.     

The problem of interviewing drug addicts in custody: A study of interrogative suggestibility and compliance

Abstract

The interrogation of drug addicts in custody presents a problem. The reliability of confessions made either under the influence of drugs or during drug withdrawal may be adversely affected. This study explores the effect of drug use and drug withdrawal on interrogative suggestibility and compliance. These two psychological factors are relevant to erroneous testimony. The interrogative suggestibility and compliance of heroin addicts on an inpatient drug unit were measured on opiates, whilst withdrawing from opiates and drug free. The interrogative suggestibility and compliance of the group of subjects as a whole did not differ significantly in these three conditions. However the results did suggest that a subgroup of vulnerable individuals may have been more suggestible when under the influence of opiates. Further work is needed to clarify these results and to aid professionals assessing fitness for interview and cases of retracted confessions.     

False confessions and the relationship with offending behaviour and personality among Danish adolescents

Purpose . The main aim of the study was to examine false confessions to police, parents and teachers and their relationship to personality and self‐reported offending. Method . The participants were 715 students in further education in Denmark. Each was asked about false admissions made to teachers and parents in the past, as well as about confessions or denials (true and false) made to the police during questioning. The participants completed questionnaires relating to offending and personality. Results . Seventy‐three (10%) of the participants said they had been interrogated by the police, of whom thirty‐seven (51%) said they had committed the offence. Five (7%) said they had given a false confession to police, whereas one hundred and seven (15%) of the total sample said they had given a false confession to parents or teachers. False confessions to teachers and parents were best predicted by the rate of self‐reported offending and high compliance. The single most commonly reported reason for making a false confession was to protect a friend. Conclusions . The findings in the present study corroborate many of those found in similar Icelandic studies, although there were some differences, including fewer people being interrogated in Denmark and a higher base‐rate of innocence of those interrogated. The study indicates that false confessions to police do happen on occasions which needs to be recognized by the authorities.     

Reasons for Lack of Consensus in Forensic Pathologist Interpretation of Photographs of Patterns of Injury of the Skin,

In a previous study, a survey‐based analysis of pathologist diagnoses of patterned injury in which participants were asked makes diagnoses from photographs in the absence of history or context. The level of consensus was low. A follow‐up survey was created to ask those who responded to the first survey why they answered as they did or why they were unsure of their answers. The most common reason for lack of consensus was that the lesion was nonspecific. Responses invoking ambiguity were more common than those that indicated a confident difference in diagnosis. There were differences between demographic groups, with age and experience being most prominent. These findings suggest that differences in image interpretation do not generally reflect firm differences in diagnosis as much as differing ways of dealing with ambiguity in the absence of history and context. A third survey will study the effect of the addition of contextual information.