The cognitive interview: Inexperienced police officers' perceptions of their witness/victim interviewing practices

Purpose. The primary objectives of the study reported here were twofold. First, to investigate less experienced frontline police officers' perceptions of their witness interviewing practices with specific reference to their use of the ten cognitive interview components taught during initial PEACE (a mnemonic for the stages of the interview; Planning and preparation, Engage and explain, Account, Closure and Evaluation) interview training. Second, to investigate this group of officers' practical experiences of interviewing witnesses. Method. A sample of 221 young, in‐service, non‐specialist police officers from five UK police forces completed a self‐report questionnaire concerning their perceived witness interviewing practices. Respondents were surveyed about their use of the PEACE cognitive interview components, their practical experiences of interviewing witnesses and victims, and their views on investigative interviewing training. Results. There was a consensus among these officers that they perceived using some of the PEACE cognitive interview components more frequently and perceived some of them to be more effective than others. Conclusion. This study provides a unique insight into the perceived interviewing practices of some of the least experienced and the least trained investigative interviewers who conduct the majority of frontline witness interviews. These officers report feeling inadequately trained, under pressure and generally ill equipped to conduct a PEACE cognitive interview.     

Exploring the Disclosure of Forensic Evidence in Police Interviews with Suspects

Despite many years of empirical research focusing on investigative interviewing and detecting deception, very little research attention has been paid to the various types of evidence which feature in police interviews with suspects. In particular, the use of forensic evidence in the context of police interviews has not been previously considered, although in recent years the availability of various types of forensic analyses has dramatically increased. In the current study 398 experienced police interviewers from various countries completed a questionnaire about their experience of using various types of forensic evidence in interviews with suspects, as well as their perceptions regarding the strength of various sources of forensic information and how this may affect their interviewing strategy. The results indicated that although the participants have forensic evidence available in a large proportion of their interviews with suspects, the vast majority of police interviewers have received no training about how to interpret or use such forensic information. However, the perceived strength of forensic evidence was reported by some participants to affect their interview strategy and specifically the timing of the disclosure of such evidence during an interview. These findings are discussed with reference to police training and interview techniques, and suggestions for further research are offered.     

The making of an expert detective: the role of experience in English and Norwegian police officers’ investigative decision-making

Biased decision-making in criminal investigations can impede or arrest the progress of justice. Previous research has not systematically addressed the effects of professional experience on the quality of detectives’ decision-making. Using a quasi-experimental design, this study compared the quality of investigative decisions made by experienced detectives and novice police officers in two countries with markedly different models for the development of investigative expertise (England and Norway). Participants (N?=?124) were presented with two semi-fictitious cases and were asked to report all relevant investigative hypotheses and necessary investigative actions in each case. The quality of participants’ responses was gauged against a gold standard established by a panel of senior homicide experts. In the English sample, experienced detectives vastly outperformed novice police officers in the number of reported gold-standard investigative hypotheses and actions. In the Norwegian sample, however, experienced detectives did not perform any better than novices. We argue that English (vs. Norwegian) detectives may benefit more from professional experience due to their Professionalising Investigation Programme and a nationwide accreditation program, requiring them to engage in extensive standardized training, systematic evaluation and synchronized development. In contrast, Norway lacks such requirements. Methodological limitations and implications for police training and accreditation policies are discussed.     

Effects of the NICHD Protocol Training on Child Investigative Interview Quality in Korean Police Officers

This study was conducted to determine, by comparing pre- and post-training interview of 18 Korean police officers, whether training in use of the NICHD Protocol improved the quality of investigative interviews of allegedly abused child victims. Results showed that Korean police officers more often followed the Protocol structure -they introduced themselves, explained the ground rules, and conducted episodic memory training-after they had been trained. Moreover, police officers used approximately three times as many desirable prompts (such as invitations and facilitators) and fewer suggestive prompts in interviews conducted after as opposed to before the training. Invitations elicited approximately four to seven times more details on average than the least productive prompts. These results confirmed that the NICHD Protocol is effective when used to interview alleged child abuse victims in East Asia.     

The relation between interviewers’ personal characteristics and investigative interview performance in a child sexual abuse context

Despite important progress in knowledge about interview ‘best practice’ with child victims, few studies had yet evaluated the impact of interviewers’ personal characteristics on adherence to these ‘best practice’. This study was designed to determine whether interviewers’ personal characteristics are associated with adherence to a structured interview protocol (National Institute of Child and Human Development), the use of open-ended questions and the amount of details provided in children’s responses during investigative interviews with alleged victims of child sexual abuse. 114 interviews were scored from 13 police investigators after they followed a one-week training program. Results showed that experience, emotional intelligence, Extraversion, Agreeableness, Conscientiousness and Neuroticism were related with adherence to the protocol and ratio of open-ended questions. Cognitive abilities were related to the amount of details obtained from the child. Generalized estimating equations were used to compare relative contribution of each variable. These findings raise questions about how investigative interviewers are selected and trained.     

Police officers' perceptions of older eyewitnesses

Purpose. This study examined United Kingdom police officers' perceptions about older witnesses (>60 years) and their thoughts about employing the cognitive interview (CI) with this group. Method. A questionnaire was used to assess officers' opinions about current interviewing protocols for older witnesses, including the CI, and to explore the challenges involved with interviewing older witnesses. Results. Over half of the officers surveyed perceived older witnesses to be less reliable and less thorough than younger witnesses. Many officers lacked confidence in dealing with the emotional distress and memory loss often displayed by older witnesses and victims. Several officers stated they were inadequately trained and had insufficient time to devote to interviewing in general. Moreover, the number of officers who considered the CI to be helpful with older witnesses was roughly equivalent to the number of officers who believed it was not. Conclusions. These results suggest that police officers, like mock jurors, consider older adult witnesses and victims to be less reliable and thorough than younger adult witnesses. Furthermore, the results indicate that many officers are not always satisfied with their interviews of older witnesses and victims. Implications for officer training are discussed.     

The cognitive interview: An innovative technique for questioning witnesses of crime

Conclusions Historically, little training has been available for investigators on interviewing witnesses and victims, but the critiques of both laboratory and field interviews indicate that current standard interview techniques can be improved considerably through training. The results of each of the studies reported here confirm that cognitive interviewing reliably enhances the completeness of a witness's recollection, and without increasing the number of incorrect or confabulated bits of information generated. Based on the examination of several interviews, a revision of the original Cognitive Interview was made, which was found further to enhance the quality of witness reports. The procedures are easy to learn and can be readily adopted in routine police interview procedures. In fact, the Cognitive Interview currently is in use as standard training at several police departments and at other law enforcement agencies. Further information regarding the Cognitive Interview technique and training programs for investigators can be obtained from either of the authors.     

Gender difference or indifference? Detective decision making in sexual assault cases

Prior research examining sexual assault case decision making has failed to account for the demographic characteristics of the criminal justice practitioners charged with making case decisions. Inclusion of such information is important because it provides researchers with a greater understanding of how criminal justice practitioners' own gender, race, age, and past experiences affect their judgments. This study seeks to examine whether gender differences exist in detectives' arrest decisions in sexual assault cases. Victim, suspect, incident, and detective characteristics are collected from police case and investigatory files on 328 criminal sexual assault cases involving adult female victims reported to a large Midwestern police department in 2003. Logistic regression is used to determine whether detective gender predicted the odds of arrest after controlling for incident, victim, and suspect characteristics. It is hypothesized that cases involving female detectives would be more likely to result in arrest after controlling for other incident, victim, and suspect characteristics. However, contrary to expectations, female detectives are significantly less likely than male detectives to arrest suspects in sexual assault cases even after controlling for the influence of other factors shown to predict arrest. The findings support prior research that suggests female practitioners may not necessarily be more sensitive toward female victims despite previous assumptions that this would hold true. The findings suggest that efforts to hire female police officers for the purposes of dealing with female-related victimization may ultimately undermine efforts to improve victim experiences with the criminal justice system. They further suggest that both researchers and police administrators need to rethink the best ways to serve female victims beyond hiring mandates.     

The Cognitive Interview: novice police officers' witness/victim interviewing practices

Abstract

The objective of this study was to investigate novice police officers’ witness interview practices immediately post investigative interview training (known as PEACE) with reference to the eight Cognitive Interview (CI) components taught. Forty-eight UK police officers took part as interviewers. Forty-eight undergraduates participated as mock witness; they viewed a non-violent crime video and 2 days later were individually interviewed by a police officer. Interviews were recorded and rated for officers’ application of the CI procedure.

Despite having recently completed the only training available to them no officer applied or attempted to apply the CI procedure in its entirety. However, some of the individual CI components were applied more frequently than others. This study provides a unique insight into the interviewing practices of some of the least researched, least experienced, and least trained investigative interviewers who, nonetheless, conduct witness interviews on a daily basis. The emergent picture suggests that either the CI procedure currently taught to novice police officers is too complex at so early a stage in their police career and/or that the current training may be insufficient to equip them with the skills necessary to effectively apply the procedure.     

Urgent issues and prospects at the intersection of culture,memory, and witness interviews: Exploring the challenges for research and practice

The pursuit of justice increasingly relies on productive interactions between witnesses and investigators from diverse cultural backgrounds during investigative interviews. To date, the role of cultural context has largely been ignored by researchers in the field of investigative interviewing, despite repeated requests from practitioners and policymakers for evidence-based guidance for the conduct of interviews with people from different cultures. Through examining cultural differences in human memory and communication and considering specific contextual challenges for investigative interviewing through the lens of culture, this review and associated commentaries highlight the scope for considering culture and human diversity in research on, and the practice of, investigative interviewing with victims, witnesses, and other sources. Across 11 commentaries, contributors highlight the importance of considering the role of culture in different investigative interviewing practices (e.g., rapport building, questioning techniques) and contexts (e.g., gender-based violence, asylum seeking, child abuse), address common areas of cultural mismatch between interviewer–interviewee expectations, and identify critical future routes for research. We call for an increased focus in the investigative interviewing literature on the nature and needs of our global community and encourage constructive and collaborative discussion between researchers and practitioners from around the world to better identify specific challenges and work together towards evidence-based solutions.     

A detective allocation model

Assuming that the primary purpose of investigative detectives is to solve cases (make arrests), a mathematical model is developed that allocates detectives among divisions in large urban police department so as to maximize the city-wide clearance rate.     

The association between investigative interviewers' knowledge of question type and adherence to best‐practice interviewing

It is well established that not all investigative interviewers adhere to ‘best‐practice’ interview guidelines (i.e., the use of open‐ended questions) when interviewing child witnesses about abuse. However, little research has examined the sub skills associated with open question usage. In this article, we examined the association between investigative interviewers' ability to identify various types of questions and adherence to open‐ended questions in a standardized mock interview. Study 1 , incorporating 27 trainee police interviewers, revealed positive associations between open‐ended question usage and two tasks; a recognition task where trainees used a structured protocol to guide their response and a recall task where they generated examples of open‐ended questions from memory. In Study 2 , incorporating a more heterogeneous sample of 40 professionals and a different training format and range of tests, positive relationships between interviewers' identification of questions and adherence to best‐practice interviewing was consistently revealed. A measure of interviewer knowledge about what constitutes best‐practice investigative (as opposed to knowledge of question types) showed no association with interviewer performance. The implications of these findings for interviewer training programs are discussed.     

Examining Police Effectiveness as a Precursor to Legitimacy and Cooperation with Police

Numerous studies by Tyler and colleagues, as well as other scholars, support a normative, process model to account for variation in the public’s cooperation with police in the USA and other developed nations. However, a recent study in Ghana suggests that in developing countries fraught with high levels of violent crime and corruption, cooperation may instead be accounted for by a utilitarian, rational-choice model. Our study examines whether public cooperation with police in the developing nation of Trinidad and Tobago is associated with the process model or rational-choice model. Using in-person structured interviews with residents, we examined whether victims’ decisions to report to police were related to individuals’ perceptions about police effectiveness or police legitimacy. We found support for the process model. We discuss possible explanations for the divergence with Tankebe’s research in Ghana and suggest avenues for future research.     

Developing a scale to measure the presence of possible prejudicial stereotyping in police interviews with suspects: The Minhas Investigative Interviewing Prejudicial Stereotyping Scale (MIIPSS)

If police interviewers’ hold negative feelings towards certain groups, this may affect how they interview them (either as victims, witnesses or suspects) in that they may not obtain reliable accounts, being the aim of such interviews. The Minhas Investigative Interviewing Prejudicial Stereotyping Scale (MIIPSS) has been developed to assess the level of any investigative interviewers’ prejudicial stereotyping towards suspects. The current exploratory study involved semi-structured interviews with twenty people, who had previously been interviewed as suspects in England and also eight very experienced lawyers. Both their views were measured using the MIIPSS before being subjected to a Guttman analysis. Statistical analyses showed that MIIPSS satisfies the criteria for classification as a valid unidimensional and cumulative scale. Therefore, researchers could use MIIPSS as a tool to measure prejudicial stereotyping in investigative interviews. Interviewers could also use MIIPSS to monitor their own attitudes towards certain groups or individuals suspected of different types of crimes.     

Cues to Deception and Ability to Detect Lies as a Function of Police Interview Styles

In Experiment 1, we examined whether three interview styles used by the police, accusatory, information-gathering and behaviour analysis, reveal verbal cues to deceit, measured with the Criteria-Based Content Analysis (CBCA) and Reality Monitoring (RM) methods. A total of 120 mock suspects told the truth or lied about a staged event and were interviewed by a police officer employing one of these three interview styles. The results showed that accusatory interviews, which typically result in suspects making short denials, contained the fewest verbal cues to deceit. Moreover, RM distinguished between truth tellers and liars better than CBCA. Finally, manual RM coding resulted in more verbal cues to deception than automatic coding of the RM criteria utilising the Linguistic Inquiry and Word Count (LIWC) software programme.In Experiment 2, we examined the effects of the three police interview styles on the ability to detect deception. Sixty-eight police officers watched some of the videotaped interviews of Experiment 1 and made veracity and confidence judgements. Accuracy scores did not differ between the three interview styles; however, watching accusatory interviews resulted in more false accusations (accusing truth tellers of lying) than watching information-gathering interviews. Furthermore, only in accusatory interviews, judgements of mendacity were associated with higher confidence. We discuss the possible danger of conducting accusatory interviews.     

A field study of adult witness interviewing practices in a Canadian police organization

Purpose. The current study examined witness interviewing practices in a Canadian police organization. The effect of interviewer, interviewee, and interview characteristics on those practices was also examined. Method. Ninety witness interviews from a Canadian police organization were coded for the following interviewing practices: types of questions asked (i.e. open‐ended, probing, closed‐ended, clarification, multiple, leading, opinion/statement, and re‐asked), the number of interruptions, percentage of words spoken by interviewer, type of pre‐interview instructions (consequential vs. generic), and whether or not a free narrative was requested (and when requested during the interview). Characteristics pertaining to the interviewer (e.g. primary interviewer's age), interviewee (e.g. witness gender), and interview (e.g. crime type) were also coded. Results. Results showed that closed‐ended and probing questions were the most widely asked questions, and that open‐ended questions were asked relatively infrequently. It was also found that the 80–20 talking rule was violated in 89% of the interviews, interviewers rarely interrupted the witnesses, and free narratives were requested often. Overall, the effect of interviewer, interview, or interviewee characteristics on interviewing practices was minimal. Conclusions. The finding that scientifically prescribed interviewing practices are employed rarely by Canadian police officers highlights a need for increased professional interviewing training. The finding that practices are largely unaffected by personal and situational factors suggests that such training would be equally beneficial for all types of interviewers, interviewees, and contexts.