Police use of deadly force: Research and reform

Police use of deadly force first became a major public issue in the 1960s, when many urban riots were precipitated immediately by police killings of citizens. Since that time scholars have studied deadly force extensively, police practitioners have made significant reforms in their policies and practices regarding deadly force, and the United States Supreme Court has voided a centuries-old legal principle that authorized police in about one-half the states to use deadly force to apprehend unarmed, nonviolent, fleeing felony suspects. This essay reviews and interprets these developments.     

Police use of force: a transactional approach

Drawing on Tedeschi and Felson’s () theory of coercive actions for conceptual guidance as well as principles underlying the notion of a force continuum structure (i.e., proportionality and incrementalism), this research examines 3,544 police–suspect encounters from an observational study of the police in an attempt to better understand the transactional process of the police–suspect encounter. Results indicate, within the context of a force continuum structure, that officers escalated the level of force in about one of five encounters involving nonresistant suspects, and de‐escalated the level of force in three of four encounters involving resistant suspects. A series of logistic and multinomial regression models show that a number of factors differentially affect the manner in which officers apply force. The results suggest that before one can begin to judge the appropriateness of police force, one should measure and consider the extent to which force is applied proportionately and incrementally.     

Police officer performance appraisal and overall satisfaction

Although the level of dissatisfaction with police officer performance appraisal systems in many agencies is substantial (Hughes, 1990; Lilley, 2002), a recent nationwide survey of six hundred police organizations indicated that overall satisfaction was significantly higher among agencies with greater levels of community policing implementation (Lilley & Hinduja, 2006a). Given that research has suggested that dissatisfaction with the appraisal process may impact future employee performance and retention (Daily & Kirk, 1992; Deming, 1986), the focus of this analysis was to examine differences among police agencies that might explain this variation. Utilizing structural equation models, results indicated that agencies with a high level of community policing implementation were not automatically associated with increased satisfaction. Rather, these organizations differed from their more traditional counterparts with regard to evaluation procedure in that they provided substantially more training to raters, emphasized the use of performance appraisal for officer development, and evaluated a broader range of performance criteria.     

Spousal violence: Police officer attitudes and arrest response

Conclusion On the 15 propositions, three propositions were found to support the general hypothesis. The findings indicate that as police officers showed an increase in attitudes supporting spousal violence the following occurred: (a) “frequent calls for police assistance from the household” became less important to police officers who were deciding to arrest; (b) “Jail overcrowding” became more important to police officers who were deciding not to arrest; and (c) “participant’s first encounter with the police” became more important to police officers who were deciding not to arrest. The other 12 propositions did not support the general hypothesis which suggested that the priority of all extralegal factors would relate to the ABUSE score.     

Shift patterns and hardiness: Police use of lethal force during simulated incidents

In the present experiment, utilizing the Film Fire' shooting simulation system, the effects of shift patterns and hardiness on police officers' judgments (decisions to (i) shoot at a suspect and (ii) taking cover during the confrontation) were examined. Sixty-one Authorised Firearms Officers were briefed on two “incidents” they would be asked to attend. The experiment took place at three different times, each time one hour before completion of the shift: at 1 p.m. (early day shift), 9 p.m. (late day shift), or 5 a.m. (night shift). In one incident the officer would be justified in shooting the suspect, whereas in the other incident it would be difficult for the officer to justify having shot the suspect. Because in both incidents the suspects were threatening the police officer, taking cover during both incidents would be desirable. Results revealed that most erroneous decisions occurred during the early shift, and that officers low in hardiness made more incorrect judgments than officers high in hardiness. Implications of the findings are discussed. Authors' Note: This study has been sponsored by the Economic and Social Research Council (ESRC), studentship award given to the first author.     

Police officer perceptions of promotion as a source of motivation

This article is an examination of the role of promotion in police motivation. Promotion represents only one source of motivation within the police department, but it is considered to be a significant source. Officers from two Connecticut Police Departments were used in this study, and Q-Methodology was used. The study investigated the need structure (which needs were important) of police officers, and the extent to which promotion satisfied need. The results indicated that officers felt higher order needs were more important than lower order needs. Moreover, officers were divided over the instrumentality of promotion fulfilling their needs, and there were demographic characteristics which appeared to contribute to these differences.     

Police use of force: an examination of the minority threat perspective

The minority threat perspective suggests that the criminal justice system may be one mechanism through which the majority group (i.e. Whites) maintains control of culturally dissimilar minority groups. Although numerous studies have examined the relationship between minority representation and various policing outcomes, few have extended this research to police use of force in the context of stop-and-frisk practices. Using stop, question, and frisk data from the New York Police Department, this study examines (1) whether racial and ethnic composition influences police use of force, and (2) whether an individual’s race/ethnicity interacts with the racial/ethnic composition of a police precinct to produce disparities in police use of force. The results provide partial support for the minority threat perspective.     

Police use of force against drug suspects: Understanding the legal need for policy development

When confronted by the police, drug suspects sometimes attempt to destroy evidence by orally ingesting the contraband in their possession. Police officers have limited time to react before this evidence is destroyed. These conditions raise the question of exactly how much force officers may employ lawfully to prevent the imminent destruction of evidence. If an officer overreacts and uses more force than reasonably necessary to retrieve the drugs, the evidence may be ruled as inadmissible at trial. Furthermore, the application of excessive force may expose the officer and the agency to claims of civil liability for injury or damages. Given the myriad of legal questions arising within this unique context, this paper reviews relevant federal and state case law to assess the legality of various levels of force when resolving such situations. Law enforcement agencies need to develop appropriate policy statements to guide officer behavior during these types of field encounters.     

Police officer support for quasimilitary stress training and orientation toward outsiders and nonlaw enforcement functions

This paper is about the meaning of police officers' support for the traditional socialization model of the quasi-military stress academy and its effects on their attitudes toward outsiders and non-law enforcement functions. More specifically, it examines consequences of quasi-military training on attitudes toward civilians in police departments, on serving minority groups and the community, and on criticality ratings of job functions such as mediation, crime prevention and community policing. Based on part of a larger job task survey conducted under the auspices of a state criminal justice training council, it includes over 70 percent of all patrol officers and their first-line supervisors in a rural New England state.     

Police officer attitudes and use of discretion in situations involving the mentally ill. The need to narrow the focus

Research to date has very effectively highlighted the fact that the mentally ill are vulnerable to systematic criminalization. The reasons cited for this range from decreasing mental health resources, to restrictive civil commitment statutes, to increased numbers of mentally ill citizens in the community as a result of deinstitutionalization. However, the research has also shown that the presence of a criminalization phenomenon is not yet generalizable. The prevailing research emphasizes a macro-level approach, using either archival data or large groups of police-citizen contacts without regard for factors intrinsic to the police-citizen exchange. This article examined two such variables (police-citizen contact type and police officer type) to illustrate the need to narrow the focus in the research. We contend that our emphasis moves the criminalization debate forward and helps provide a more comprehensive understanding of the interaction between the police and the mentally ill. Further, we submit that by controlling for these two variables, research findings will more likely be generalizable and replicable.     

Police use of excessive force: Does the race of the suspect influence citizens' perceptions?

Instances of excessive force by police officers, most notably the Rodney King incident in Los Angeles and the Malice Green fatality in Detroit, suggest that the race of the suspect may influence the decision to use excessive force. If police practices are simply a reflection of the expectations of larger society, then it follows that citizens' evaluations of police brutality toward minorities might reflect this sentiment. As part of a larger study focusing on the exploration of police misconduct, a telephone survey containing 16 vignettes was developed, each vignette described a separate type of misconduct in which a hypothetical officer was involved. Of these 16 vignettes, 3 described the misconduct of excessive force and are analyzed for the present study. A random sample of 992 Ohio citizens were surveyed. The hypothesis that citizens in general assign significantly lower seriousness scores to excessive force on African Americans and Hispanics than on whites was tested. Our hypothesis was not supported. Instead, we found evidence to suggest that the behavior of the suspect during the arrest and the behavior of the police officer are much more significant correlates of citizens' perceptions of police use of excessive force than is the race of the suspect.     

Police officer perceptions of the impact of Crisis Intervention Team (CIT) programs

The Crisis Intervention Team (CIT) program is an approach for law enforcement officers to safely response to individuals who are experiencing a mental health crisis. Research must identify the components of CIT that are instrumental to the overall effectiveness of the program. For instance, recent studies report that CIT may have a transformative effect on officers' attitudes by increasing exposure to and familiarity with mental illness. This study explores this possibility further by examining 57 CIT officers' experiences with mental illness and attitudes about CIT. Specifically, we assessed how personal and professional exposure to mental illness associates with officers' perceptions about CIT generally, as well as with opinions about the officers' confidence in their abilities and the perceived effectiveness of the police department in responding to individuals in mental health crisis. Our findings indicate that CIT is rated very positively by officers. We found that officers' attitudes about the impact of CIT on improving overall safety, accessibility of services, officer skills and techniques, and the preparedness of officers to handle calls involving persons with mental illness are positively associated with officers' confidence in their abilities or with officers' perceptions of overall departmental effectiveness. There is further evidence that personal contact with individuals with mental illness affects the relationship between attitudes that CIT impacts overall safety and perceived departmental effectiveness. The results of this exploratory study underscore the importance of CIT officers' perceptions of key elements of CIT and the role of exposure to mental illness in examining program effectiveness.     

Validation of police officer recruit candidates' self-reported drug use

Three hundred and fifty-nine Chicago Police Department recruit candidates submitted urine specimens as part of a drug-screening program. Candidates were tested in two groups about a week apart. About 20% of the recruit candidates in each group evidenced drug, primarily marijuana use. As part of a psychological screening test battery all the candidates also took the Inwald Personality Inventory (IPI). The IPI contains a self-report Drug Use Scale. Drug-Positive and Drug-Negative candidates' Drug Use Scale scores were matched by age, sex, and racial/ethnic group and compared to evaluate the accuracy of self-reported drug use when screening police recruit candidates. Results showed that Drug-Positive candidates' self-reported drug use was consistently higher than that of Drug-Negative candidates. Item-level analyses showed which drug use items best discriminate between Drug-Positive and Drug-Negative candidates. Implications are drawn for use of self-report as part of a police candidate screening process.     

Atomic force microscopy as a biophysical tool for nanoscale forensic investigations

The atomic force microscope (AFM) has found its way to the arsenal of tools available to the forensic practitioner for the analysis of samples at the nano and microscales. As a non-destructive probing tool that requires minimal sample preparation, the AFM is very attractive, particularly in the case of minimal or precious sample. To date, the use of the AFM has primarily been in the arena of imaging where it has been complementary to other microscopic examination tools. Forensic applications in the visual examination of evidence such as blood stains, questioned documents, and hair samples have been reported. While a number of reviews have focused on the use of AFM as an imaging tool for forensic analyses, here we not only discuss these works, but also point to a versatile enhancement in the capabilities of this nanoscale tool – namely its use for force spectroscopy. In this mode, the AFM can determine elastic moduli, adhesion forces, energy dissipation, and the interaction forces between cognate ligands, that can be spatially mapped to provide a unique spatial visualization of properties. Our goals in this review are to provide a context for this capability of the AFM, explain its workings, cover some exemplary works pertaining to forensic sciences, and present a critical analysis on the advantages and disadvantages of this modality. Equipped with this high-resolution tool, imaging and biophysical analysis by the AFM can provide a unique complement to other tools available to the researcher for the analysis and characterization of forensic evidence.     

Police use of body worn cameras

This article gives an overview of police use of body-worn cameras (BWCs). In doing so it explores the widespread adoption of BWC technology around the world and shows how different jurisdictions are adopting the cameras for a variety of uses. Next, the review examines the empirical research of BWCs and assesses the perceived benefits and concerns of the technology. The article then examines a case study of police use of BWCs in Canada. Politicians and civil rights groups have called on police in Canada to adopt BWCs to improve accountability, but little movement has been made in this direction. The article identifies several reasons why police have been slow to adopt the technology in Canada despite public demand and the widespread deployment of the technology elsewhere. It concludes with suggestions for areas of future research.     

Police supervision on the street: An analysis of supervisor/officer interaction during the shift

This article examines a major assumption of street supervisors in police agencies—that control of police officer behavior is dependent on strict hierarchical organization. The intellectual roots of this assumption are examined, and an emerging perspective developed from direct observation of patrol operations is presented. The research questions are addresses with data that were collected from observations of patrol activities in 60 residential neighborhoods in 24 agencies. The analysis, which is referenced to officers' shifts of duty, shows that the effect of supervision is in the direction posited by the authors of traditional police administration texts, but the magnitude of the effect is not overly strong. The findings are used to inform the evaluation of a common policy option directed at improving officer performance through supervision.     

A comparative study of the attitudes of Urban,Suburban and Rural Police Officers in New Jersey regarding the use of force

This article examines the attitudes of sample populations of urban, suburban and rural police officers in New Jersey in regard to a hypothetical use of force scenario. The aim of the study is to identify similarities and differences in the perceptions of officers who are faced with the same type of hypothetical situations but who are exposed to different training, procedural and environmental factors. Police officers in the United States receive different types of training in each state that might influence their attitudes towards the use of force. A pilot study was conducted comparing two urban police departments from two different states and showed some differences in the attitudes of the surveyed officers. To further explore these differences, a more refined look at three police departments in one state (New Jersey) was conducted as part of a doctoral dissertation of the lead author. Research questions are aimed at identifying the differences in the frameworks for the justification of force based on a host of variables. The research questions stipulated that there will be some significant differences in attitudes towards the use of force by the officers, based on physical location of the communities they police. The findings of the study identified additional factors that might influence the officers’ attitudes. Twelve focus groups, four at each of the sites, were analyzed and it appears that there may be a geographic and demographic influence on how the officers respond to the scenario.