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.     

Trauma-exposed young victims: possibilities and constraints for providing trauma support within the investigative interview

For police, the aim of an investigative interview is to obtain a detailed and reliable account from the interviewee while remaining objective and impartial. This study explores the challenges involved in interviewing traumatised young victims and providing trauma support within the legal framework. The study is based on 19 videotaped investigative interviews of highly traumatised young victims of the 2011 Utøya terror attack in Norway and research interviews with the 17 detectives who conducted the police interviews. We analysed the research interviews that comprise the main data using qualitative inductive methods. We used the videotaped investigative interviews as a framework for the research interviews. We identified various types of constraint and support that the detectives perceived and found that objectivity is critical to the interviewers’ understanding of their professional role, which results in phase-bound support. At the beginning and end of the interview, they perceive opportunities to be supportive that are in accordance with recommended trauma care. However, the interviewing detectives become more passive when the conversation is about the criminal offence and seem less confident about being supportive. This study provides relevant new insights into how police experience interviewing traumatised young victims.     

Death notification

Death notification--informing the deceased's family of an unexpected death--is a singularly stressful task common to medical personnel, clergy, and police. We surveyed by questionnaire a group of 50 Los Angeles Police Department homicide detectives, 21 of whom were subsequently interviewed by telephone. The detectives stated that their initial apprehension stemmed from feeling unprepared. Identification with victims' families was common and compounded the stress. One prevalent worry concerned the possible reactions of the family upon hearing the news, especially the risk of a violent attack on the police officer. Several coping styles were recognized. Our findings suggest that the repetitive performance of this continuously stressful task may be a prominent and underappreciated contribution to occupational burnout.     

THE MUNICIPAL POLICE DETECTIVE: AN HISTORICAL ANALYSIS

When modern policing in cities developed in the United States, detection was more a private than a public matter. Once public detectives became an integral part of police departments, their role and activities gradually changed. Between the middle of the 19th and 20th centuries, detectives evolved through three phases: secretive rogue, inquisitor, and bureaucrat.     

How long does it take? An exploration of the time between case assignment and a detective’s first investigative activity

Citizens and victims perceive the criminal justice system to be protracted. Blame for lengthy delays has disproportionately fallen on detective work. To that end, these analyses explore how long it took 184 detectives to work index crimes. Data suggest that more serious crimes, cases with a known suspect, and offenses that did not result in an arrest are most likely to be investigated and worked more promptly by detectives. Detectives, however, continue to exercise a great deal of discretion in if and when cases are worked once they are assigned. These findings are discussed as they relate to police performance indicators, the allocation of departmental resources, issues of crime control, and citizen satisfaction with the police.     

Insider Gang Knowledge: The Case for Non-Police Gang Experts in the Courtroom

Drawing on data from surveys and interviews administered to non-police gang experts, the authors argue that police gang detectives are often erroneous in their definition of gang membership and gang-related crime. Police gang experts often mistake signs of urban youth culture for gang membership and criminal conspiracy. Evidence is presented on the ways in which knowledge about gangs is often determined by the social position of the gang expert. Former gang members and community workers may demonstrate a more nuanced and accurate knowledge of gangs than gang detectives. We see the admission of non-police gang expert testimony to the courtroom as a viable way of countering social perceptions that view aspects of gang membership and racial membership interchangeably and possibly help counter disproportionate prison sentences bestowed upon black and Latino youth.     

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 role of criminal record in the federal sentencing guidelines

In this paper my concern is with the collective moral responsibility of criminal investigators for the outcomes of their investigations, bearing in mind that it is important to distinguish collective moral responsibility from, and relate it to, individual moral responsibility. In what sense, if any, are police detectives individually and collectively morally responsible for their success (or, for that matter, their failure) in gathering sufficient evidence to identify, arrest, and charge an offender who has committed a serious crime? Alternatively, in what sense are they morally responsible in cases where they identify, arrest, and charge an innocent person? And in what sense, if any, are police detectives individually and collectively morally responsible for the ultimate outcome of the trial, the finding by the courts of someone they have investigated and charged with a serious crime to be guilty or innocent?     

Detecting deception: Practice, practitioners, and theory

Conclusions Of the forty-six types of detectives studied, all but one used the same general procedures to detect deception. (The exception was the adversarial method used by trial lawyers working in the American judicial system.) All others used standard logical systems (both deductive and inductive) in combination with intuitive methods. The more successful detections seemed to be closely associated with intuitive methods, particularly so-called “indirect thinking”. Authors'Note: The “I” in this chapter refers to the principal author, Bart Whaley. Since it was first written in 1999, Whaley has increased the number of types of detectives studies to over 100, and the number of major works cited to over 500. The most important finding was to reinforce the recommendation that effective detection and deception is crucially dependent on large and accurate data bases based on systematically collected and analyzed case studies.     

Digital Forensics as a Service: A game changer

How is it that digital investigators are always busy and still never have enough time to actually dig deep into digital evidence? In this paper we will explore the current implementation of the digital forensic process and analyze factors that impact the efficiency of this process. Next we explain how in the Netherlands a Digital Forensics as a Service implementation reduced case backlogs and freed up digital investigators to help detectives better understand the digital material.     

Bullet identification: a case of a fatal hunting accident resolved by comparison of lead shot using instrumental neutron activation analysis.

Bullet identification by chemical analysis often provides a powerful clue in forensic science. A case is reported in which a hunting accident was resolved by using instrumental neutron activation analysis (INAA) for direct comparison of the trace element content in lead shot. Different preparation batches of lead shot appear to have a high within-group composition homogeneity, and good differentiation is achieved between different batches. Determination of the nickel and antimony content on a bush branch demonstrated that the branch had been perforated by one of the shot pellets, and this helped the detectives in reconstruction of the crime scene.     

Productivity measures in the criminal investigation function

The authors served as evaluators of a Managing Case Investigations (MCI) demonstration project in a major urban police department. Such projects were funded by Law Enforcement Assistance Administration (LEAA) as a follow-up on the Rand Corporation study of the criminal investigation process. This article uses a framework of economic analysis to evaluate the efficiency of the demonstration project. Evaluation shows that the clearance rate of cases rose during the project without the use of additional resources. Impressions gained concerning the appropriate criteria for judging the work of detectives are discussed.     

Applications of crime seriousness information in police departments

This article describes the use of crime seriousness information in police operations. It is based on a project at the St. Louis Metropolitan Police Department in which eight weeks of crime information were coded using the Sellin-Wolfgang seriousness scale. Statistics were then derived which quantified the seriousness of the various categories of crimes. Several applications were investigated based on the crime seriousness data. These included: (1) case assignment to detectives, (2) allocation of patrol personnel, and (3) determination of the size and location of patrol beats. Areas for future research are presented involving the use of crime seriousness data.     

Criminal Justice “Hollywood Style”: How Women in Criminal Justice Professions Are Depicted in Prime-Time Crime Dramas

With the abundance of prime-time crime dramas on television, it is imperative that researchers examine how female criminal justice professionals are depicted in the world of fiction versus in reality. In this study, a content analysis of 10 prime-time television crime dramas was conducted. Of the 69 characters observed, female criminal justice professionals were portrayed as young, White, and single. Female characters were more provocatively dressed, and they also were more likely to be victims of crime. Unlike previous studies that showed that female characters were underrepresented on prime-time television, here women were overrepresented as crime scene investigators, detectives, and special agents. Stereotypical images of women as subordinate, nurturing, affectionate, and sexually attractive still prevail. However, compared to their male counterparts, female characters were equally assertive, self-confident, and competitive.     

A father marries his daughters: a case of incestuous polygamy

Polygamy is a risk factor for incest. This case report of incest and polygamy portrays the dynamics that dominated this family's identity. The father indoctrinated and groomed his biological daughter and stepdaughter for sexual gratification in a cult-like atmosphere, and secretly married both of them. He justified his acts to the family members under the guise of religion, but he later denied allegations of polygamy and sexual contact with his daughters when confronted by the authorities. Ultimately, his parental rights were terminated in family court. The authors interviewed the primary victim and reviewed extensive evidence, including videotapes of the victims talking with detectives and also privately amongst each other. Videotape dialogue excerpts capture how these young girls individually coped with the sexual abuse and responded to becoming child wives in a polygamous family. Criminal charges ultimately were not pursued because the key witness refused to testify against her biological father.     

Toward a Balanced Approach: Defining Police Roles in Responding to Domestic Violence

Responding to domestic violence poses unique challenges to law enforcement officers. Prior research has focused on issues such as officer safety and arrest policies but overlooked a critical component—the officers’ perception of their role in responding to domestic violence incidents. This study explores how police officers define their roles through the use of focus group interviews with detectives assigned to a domestic violence unit. Findings include the identification of three role perspectives. Recommendations for a more balanced approach of these role perspectives in responding to domestic violence crimes through the use of more effective training, supervision, and evaluation are proposed.     

侦查到案制度:从现实到理想——一个实证角度的研究

传唤、拘传、口头传唤、留置、抓捕构成了实践中的侦查到案措施体系。对三个典型地区公安机关的调研表明,法定到案措施与非法定到案措施的适用明显错位。根据研究资料分析:审批程序耗时与到案期限紧张这两个因素造成了法定到案措施适用率低下;相比而言,非法定到案措施具有适用条件灵活、适用机制简便、适用手段具有不同程度的强制性以及适用期限弹性较大等特点,由于这些特点,侦查人员较愿选择非法定到案措施。实践中到案措施体系的犯罪控制功能显而易见,从程序正当角度评价,这一体系的运行既有权力控制的倾向,也有权力滥用、不当限制权利的倾向。侦查到案制度的改革应坚持犯罪控制与人权保障相平衡的理念,汲取实践中的理性做法,适当参考国外同类制度,建立一个逻辑严密、协调一致,能够充分应对各类案件特点和证据条件的到案措施体系。     

Does the police code of silence vary with police assignment? An empirical exploration of the relation between the code and assignment

ABSTRACT

This paper contains an in-depth exploration of the relation between police code of silence and police assignment. A police integrity survey was used to measure the contours of the code among Croatian patrol officers, detectives, and community-policing officers. Samples of police officers evaluated fourteen hypothetical scenarios describing various forms of police misconduct. Whereas the type of assignment was a weak predictor of the respondents’ adherence to the code of silence, the respondents’ assessments of misconduct seriousness and expected discipline, as well as perceptions whether other officers would report misconduct, were strong predictors of the respondents’ own expressed adherence to the code.     

What Makes a Good Alibi? A Proposed Taxonomy

A taxonomy of alibis is proposed involving two forms of supporting proof: physical evidence and person evidence. Levels of physical evidence and person evidence were combined to create 12 cells in the taxonomy. Participants (n = 252), who were asked to assume the role of detectives, evaluated alibis representing these 12 cells. The believability of the alibis generally followed the taxonomy's predicted pattern, but physical evidence, when present, tended to overwhelm the person evidence more than had been expected. In addition, alibi evaluators seemed to not consider the possibility that a stranger who corroborated an alibi might be mistaken about the identity of the person. Trait inferences regarding the alibi providers tended to follow the believability data, even when the traits themselves were not relevant to believability of the alibi. We call for the development of a literature on the psychology of alibis, recommend the taxonomy as a framework, and suggest several avenues of inquiry.