Suggestiveness in photospread line-ups: Similarity induces distinctiveness

The present research examined whether line-ups based on target (‘suspect’) face similarity are biased or suggestive. Four experiments are described in which subjects constructed photographic line-ups by selecting foils similar in appearance to a target. Later, another group of subjects who had not seen the faces before (mock witnesses) were asked to pick out the targets from the line-ups. All four experiments showed that mock witnesses selected the target significantly more often than expected by chance, thereby demonstrating suggestiveness. Three alternative line-up construction methods were also evaluated. In these methods, foil selection was based not only on target similarity but also on similarity with one or more of the other line-up faces. Results showed that alternative line-up targets were not selected significantly more often than chance, suggesting that bias was reduced. An overall analysis showed that the alternative line-ups were significantly less suggestive than target-based line-ups. The results indicate that foil selection procedures that incorporate foil-to-foil similarity produce fairer line-ups than those exclusively based on target similarity.     

Refining the blank line-up procedure: How should we instruct eyewitnesses?

Presenting a blank line-up—containing only fillers—to witnesses prior to showing a real line-up might be useful for screening out those who pick from the blank line-up as unreliable witnesses. We show that the effectiveness of this procedure varies depending on instructions given to witnesses. Participants (N = 462) viewed a simulated crime and attempted to identify the perpetrator from a line-up approximately 1 week later. Rejecting a blank line-up was associated with greater identification accuracy and greater diagnosticity of suspect identifications, but only when witnesses were instructed prior to the blank line-up that they would view a series of line-ups; the procedure was ineffective for screening when witnesses were advised they would view two line-ups or received no instruction. These results highlight the importance of instructions used in the blank line-up procedure, and the need for better understanding of how to interpret choosing patterns in this paradigm.     

Super-recognisers: Face recognition performance after variable delay intervals

Outstanding long-term face recognition of suspects is a hallmark of the exceptionally skilled police ‘super-recognisers’ (SRs). Yet, research investigating SR's memory for faces mainly employed brief retention intervals. Therefore, in Experiment 1, 597 participants (121 SRs) viewed 10 target videos and attempted identification of targets from 10 target-present line-ups after 1–56 days. In Experiment 2, 1,421 participants (301 SRs) viewed 20 target videos, and after a baseline of no delay to 28 days,—10 target-present and 10 target-absent line-ups, to assess correct line-up rejections. Overall, delay positively correlated with hits but not with correct rejections. Most, but not all SRs, made more correct identifications and correct rejections than controls at all retention intervals, demonstrating that many SRs possess enhanced long-term face memory. This research adds to the knowledge of SR's skillsets, and enhances the case for the selection of SRs to identity critical roles—particularly policing.     

Searching for the sequential line-up advantage: a distinctiveness explanation

Gronlund ( 2005 ) proposed that one factor leading to a sequential line-up advantage could be the greater likelihood of recollecting distinctive information about a perpetrator when using a sequential line-up. Since then questions have been raised about the robustness of the sequential advantage and the possible moderating role of line-up fairness and suspect position. We manipulated these factors as well as suspect/target distinctiveness in two experiments. A sequential advantage occurred only after encoding a distinctive target, both for biased line-ups (Experiment 1) and fair line-ups (Experiment 2). Remember-Know results were consistent with the greater use of a recall-to-reject strategy in target-absent sequential line-ups. This provided support for the first process-based explanation of the sequential line-up advantage. No consistent position effects were found, but this might be due to the line-up recognition paradigm used, in which each participant viewed a line-up for each of several targets. Theory-based explorations of eyewitness identification are necessary to continue to delineate the underpinnings of the sequential line-up advantage.     

The influence of face age on identification from a video line-up: A comparison between older and younger adults

A group of young-adult (aged 18–35 years) and older-adult witnesses (aged 61–83 years) viewed films of two similar staged thefts, one that depicted a young culprit and the other an older culprit. After a short delay of 40–60 minutes participants were presented with two separate video line-ups, one for each target. In one line-up the target was present (TP) and the other the target was absent (TA). Older adults performed more poorly in target present and absent line-ups, and showed no own-age bias, however young adults showed an own age advantage for the TA line-ups.     

The phenomenology of carryover effects between show-up and line-up identification

This study explored carryover effects from show-ups to subsequent line-up identifications using a novel paradigm in which participants rendered multiple identification judgements. A total of 160 participants studied a series of faces and subsequently viewed a series of target-absent and target-present show-ups. Following a retention interval, participants then made identification judgements from a series of target-absent and target-present line-ups. Remember-Know-Guess judgements were collected to assess the phenomenological basis of carryover effects in face identification. Our results indicated clear carryover effects from show-ups to line-ups, such that repeated exposure to a face increased the likelihood that it would later be identified, regardless of whether or not it had been presented at the time of study. The phenomenological basis for these carryover effects is discussed, as are the implications of these findings for police conduct of multiple eyewitness identification procedures.     

Four heads are better than one: combining face composites yields improvements in face likeness

Four participants constructed face composites, of familiar and unfamiliar targets, using Pro-Fit, with reference images present or from memory. The "mean" of all 4 composites, created by morphing (4-morph) was rated as a better likeness than individual composites on average and was as good as the best individual likeness. When participants attempted to identify targets from line-ups, 4-morphs again performed as well as the best individual composite. In a second experiment, participants familiar with target women attempted to identify composites, and the trend showed better recognition from multiple composites, whether combined or shown together. In a line-up task with unfamiliar participants, 4-morphs produced most correct choices and fewest false positives from target-absent or target-present arrays. These results have practical implications for the way evidence from different witnesses is used in police investigations.     

Ältere Menschen als Zeugen vor Gericht

This article provides an overview of the current empirical literature concerning older adults as eyewitnesses. Aging affects perception, memory and eyewitness testimony in many older adults (aged 65 years and above). As a group, they provide shorter accounts in free call, fewer correct and more incorrect details. Often they have to be asked more questions than young witnesses in order to obtain the same amount of information. Age differences have also been demonstrated for answers to questions. There are some promising attempts to improve older witnesses’ testimony, such as the Cognitive Interview. However, replication studies are still needed here. It remains unclear if older witnesses are generally more vulnerable to suggestions than young witnesses. There is some evidence that at least in some situations this seems to be the case. In photographic line-ups young and older adults show similar positive identification rates, but older adults have higher false alarm rates. When viewing mug books, older adults are more likely to make a choice than young adults, which can lead to higher rates of possibly false identification in a subsequent line-up. With increasing age age differences between young and old witnesses also increase. However there is considerable interindividual variation in witness performance: some witnesses are impacted by age early-on, while others remain highly functioning until very old age.     

Rapport‐Building During Witness and Suspect Interviews: A Survey of Law Enforcement

Building rapport with adult witnesses and suspects is recommended by major investigative interviewing protocols (e.g., Cognitive Interview and the Army Field Manual in the USA and PEACE in the UK). Although recent research suggests that building rapport can sometimes benefit police investigations by increasing the accuracy of adult eyewitness reports and potentially enhance the diagnosticity of evidence obtained from suspects, little data exist regarding how law enforcement interviewers actually define and build rapport in real‐world investigations. To fill this void, the present study distributed a questionnaire containing open and closed‐ended questions to 123 law enforcement interviewers in police training courses to determine how they conceptualize and build rapport with adult interviewees. Results indicate that a majority of law enforcement interviewers define rapport as a positive relationship involving trust and communication, with a strong minority defining rapport as a ‘positive or negative’ relationship. Further, law enforcement interviewers reported building rapport with adult witnesses and suspects in a similar manner, often by using verbal techniques (e.g., discussing common interests via small talk) and non‐verbal techniques (e.g., displaying understanding via empathy and sympathy). Theoretical and applied implications of these results are discussed. Copyright © 2015 John Wiley & Sons, Ltd.     

Eyewitness recognition errors: the effects of mugshot viewing and choosing in young and old adults

Eyewitness memory is vulnerable to information encountered prior to a lineup. Young (18-30 years) and older (60-80 years) witnesses viewed a crime video. Some witnesses were then exposed to mugshots of innocent suspects that included a critical foil. After a 48-h delay, all the witnesses took part in a target-absent lineup that included the critical foil and five new foils. Witnesses who picked one of the mugshots as the likely perpetrator showed inflated rates of choosing the critical foil from the lineup. Context reinstatement instructions did not reduce choices of innocent foils following mugshot exposure. Despite age-related increases in false choosing, age did not qualify other effects. The results are discussed in terms of commitment, source memory, and gist-based processing.     

The effects of local and global processing orientation on eyewitness identification performance

Recent work has demonstrated that performance on a simultaneous target-present photographic line-up can be enhanced by prior global processing orientation, and hindered by prior local processing orientation induced by processing Navon letter stimuli. A series of studies explore the generality of this processing bias effect using either videotaped scenarios or live interactions. Five experiments demonstrate that these effects are seen across a range of test stimuli, test formats, and test instructions. These data inform the processes engaged in by witnesses when making line-up identifications and indicate that it may be possible to improve the accuracy of witnesses making such judgements.     

The effects of local and global processing orientation on eyewitness identification performance

Recent work has demonstrated that performance on a simultaneous target-present photographic line-up can be enhanced by prior global processing orientation, and hindered by prior local processing orientation induced by processing Navon letter stimuli. A series of studies explore the generality of this processing bias effect using either videotaped scenarios or live interactions. Five experiments demonstrate that these effects are seen across a range of test stimuli, test formats, and test instructions.These data inform the processes engaged in by witnesses when making line-up identifications and indicate that it may be possible to improve the accuracy of witnesses making such judgements.     

The unconscious transference effect: Are innocent bystanders ever misidentified?

Unconscious transference refers to an eyewitness's misidentification of an innocent bystander for a criminal perpetrator because of the witness's exposure to the bystander in another context. In a series of five field studies involving 330 retail store clerks and 340 students, five retention intervals from 2 hours to 2 weeks, seven bystander-perpetrator intervals from 2 minutes to 2 weeks, three line-up types, two levels of line-up similarity, four different bystanders and four different targets, with one exception no evidence was obtained that could be interpreted to demonstrate the phenomenon of unconscious transference. That is, the resultsr repeatedly failed to reveal more misidentifications of an innocent bystander by witnesses who had been previously exposed to the bystander than by control evewitnesses who had not. To the contrary, the prior observation of the bystander often served to reduce the frequency of misidentification. In the final experiment the kind of misidentification error referred to as unconscious transference did occur, but only within a particular combination of bystander-perpetrator similarity and line-up construction: a combination that, in conjunction with the kind of event used, seems unlikely in real-world settings. Nevertheless, the inclusion of a familiar face in the line-ups often altered witnesses' choices in such a way that choosing someone was more likely when the lineup included a familiar face than when it did not. Finally, in contrast to the current explanations of unconscious transference, it is argued that it may not be a sense of familiarity with the bystander that is the basis of misidentifications; rather, it may also include incorrect inferences about the likelihood that the bystander might be the perpetrator.     

The cognitive interview: Its origins,empirical support,evaluation and practical implications

This paper provides a background to current research on the cognitive interview (CI), which is a set of cognitive retrieval techniques designed to facilitate memory search (for example, via reinstatement of contextual cues). One of the principal aims of this research is to identify and develop techniques which police investigators can themselves use. A series of studies were conducted at the University of California, Los Angeles, using police officers as interviewers and students, non-students and children as witnesses to realistic crimes. In all studies the CI elicited significantly more correct information with no apparent increase in errors or confabulations. The CI has been tested in a field study involving police officers in Florida. This paper will critically review this research, as well as more recent unpublished work including CI studies conducted in Germany and the UK. Some important modifications of the original CI procedure are described, and there is a theoretical discussion and explanation of the various components of the CI procedure. Finally, we will consider applications of the CI in clinical and organizational settings.     

Murderers' and sexual offenders' experiences of police interviews and their inclination to admit or deny crimes

This research concerns murderers' and sexual offenders' experiences of Swedish police interviews and their attitudes towards allegations of these serious crimes. The explorative study is based on a questionnaire answered by 83 men convicted of murder or sexual offences. Results show that when police officers interview murderers and sexual offenders, the individuals perceive attitudes that are characterized by either dominance or humanity. Logistic regression shows that police interviews marked by dominance are mainly associated with a higher proportion of denials, whereas an approach marked by humanity is associated with admissions. When suspects feel that they are respected and acknowledged, they probably gain more confidence and mental space, allowing them to admit criminal behaviour.     

When accurate and inaccurate eyewitnesses look the same: a limitation of the ‘pop‐out’ effect and the 10‐ to 12‐second rule

Research has found support for a ‘pop‐out effect’ that occurs when witnesses who accurately identify a criminal from a lineup are faster and uses more automatic processing than inaccurate witnesses who misidentify a foil. We present evidence that this finding may not occur with biased lineups. Witnesses to a mock theft were asked to make a lineup identification and three types of witnesses were compared: (1) accurate witnesses who identified a thief, (2) inaccurate witnesses who misidentified a foil who was more similar looking to the thief than the other lineup foils and (3) inaccurate witnesses who misidentified a foil who was not more similar in appearance to the thief than the other lineup foils. Accurate witnesses who identified the thief and inaccurate witnesses who misidentified a foil more similar to the thief than the other lineup foils were indistinguishable; both were faster, used more automatic recognition processes and were more confident than inaccurate witnesses who identified other foils. Copyright © 2006 John Wiley & Sons, Ltd.     

Police interviewing and psychological vulnerabilities: predicting the likelihood of a confession

This paper is concerned with examining the differences between people who confess and those who deny offences during a police interview. The main hypothesis under investigation is that psychologically vulnerable suspects are particularly likely to confess. This paper is also concerned with identifying variables that might be related to the confession process. One hundred and sixty suspects detained at two London police stations were assessed psychologically prior to being interviewed by the police. The results of this assessment, an analysis of the interview procedure and biographic details were subjected to a logistic regression analysis. There was no evidence to support our main hypothesis. However, suspects were more likely to confess if they reported having consumed an illicit (non-prescribed) drug in the previous 24-hour period, and less likely to confess when interviewed in the presence of a legal adviser or if they had experience of prison or custodial remand. In this study younger suspects were also more likely to confess. © 1998 John Wiley & Sons, Ltd.     

The effects of explicit “Not Present” and “Don't Know” response options on identification decisions in computer-administered lineups

Eyewitness researchers recommend that “not present” and “don't know” response options should be presented with police lineups. Although it is important that witnesses—most of whom are unlikely to be familiar with the identification task—are fully cognizant of all response options available to them, an understanding of how explicit non-identification options affect performance is lacking. Across four experiments, including 3,633 participants and 8 different stimulus sets, we tested the effects of including non-identification options in computer-administered lineups. When explicit non-identification options were presented, target-present and -absent choosing decreased. This decrease in choosing was characterized by a shift from filler identifications to lineup rejections. ROC analyses revealed that there was no overall difference in discriminability between guilty and innocent suspects depending on response option condition. On balance, the findings suggest that, in addition to informing witnesses about acceptable responses, displaying non-identification response options does not undermine identification performance.     

Investigating Predictors of Superior Face Recognition Ability in Police Super‐recognisers

There are large individual differences in the ability to recognise faces. Super‐recognisers are exceptionally good at face memory tasks. In London, a small specialist pool of police officers (also labelled ‘super‐recognisers’ by the Metropolitan Police Service) annually makes 1000's of suspect identifications from closed‐circuit television footage. Some suspects are disguised, have not been encountered recently or are depicted in poor quality images. Across tests measuring familiar face recognition, unfamiliar face memory and unfamiliar face matching, the accuracy of members of this specialist police pool was approximately equal to a group of non‐police super‐recognisers. Both groups were more accurate than matched control members of the public. No reliable relationships were found between the face processing tests and object recognition. Within each group, however, there were large performance variations across tests, and this research has implications for the deployment of police worldwide in operations requiring officers with superior face processing ability. Copyright © 2016 John Wiley & Sons, Ltd.