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In this study we set out to explain police support for the use of force, police response to a vignette about force, and police self-reported use of force.

The computer-assisted survey was conducted among 419 officers of the Metropolitana police department in Buenos Aires, Argentina.

The regression analyses show that a substantial part of how officers view force, and the reported frequency of their own use of force, can be explained through demographic characteristics, organizational features, attitudes toward citizens, and personal experience.

This study was conducted in a region where excessive police use of force is unfortunately a continuing concern. Based on the results we advise police organizations to tackle this issue by investing in improving police attitudes toward both internal and external relations. We also recommend prohibiting officers to carry the regulatory gun while off duty, in order to reduce deaths of both civilians and officers.

The purpose of this study is to explore the ideological gaps on police use of force.

In a national-level survey distributed via Mechanical Turk (MTurk) (n = 979), the authors explore the role that respondents' political ideology plays in the approval of police use of force across a range of scenarios.

Across all scenarios, self-identified conservative respondents maintain strong approval of police use of force. In comparison, liberal respondents provide more variance in their views on approval of police use of force based on the scenario. The scenarios where there are small gaps in approval between the two ideologies are when reasonable force is used toward a violent threat.

There are specific circumstances where the messaging surrounding use of force can create agreement (reasonable) or disagreement (excessive) among conservatives and liberals.

Conservatives and liberals demonstrate gaps across an even larger set of use of force scenarios.

Few studies track non‐lethal weapon use by law enforcement agencies (LEAs), the number/level of force used by these agencies, complaints for excessive force, and injuries to officers and suspects, both over time (especially recently) and with a national probability‐based sample. This study aims to address these gaps by developing longitudinal estimates to examine these use‐of‐force issues.

Two surveys of LEAs were conducted (n=518 and n=357 LEAs), covering 2003 to 2008, and statistical weights were used to align the data to be representative of all state and local LEAs in the USA, including adjustments for survey non‐response.

Conducted energy devices (CED) deployment has risen significantly (to about 70 percent of LEAs). However, standard baton use is down to 25 percent in 2008 and when available to the officer, batons are more likely to be left in their vehicles compared to CEDs. Baton use and empty‐hand tactics are becoming less commonly used by officers, but CED use was ranked among the most used tactics from 2005 to 2008. Excessive force complaints against LEAs, internally generated, have more than doubled from 2003 to 2008. Officer injuries varied little from 2003 to 2008, but they are still only about half as common as suspect injuries. Also, only 20 percent of LEAs collect injury data in a database, complicating future research.

This is one of the few studies to track, nationally, the types of non‐lethal weapons in use by LEAs, and force level used, providing aid to LEA executives and policymakers who need to follow new trends in non‐lethal weapons.

The purpose of this paper is to empirically examine the relationship between police use of force and citizen complaints alleging improper use of force.

The current study utilizes official use of force and citizen complaint data, as well as surveys of patrol officers, from the Assessing Police Use of Force Policy and Outcomes Project, a multimethod National Institute of Justice funded study.

Bivariate and multivariate analyses revealed that the number of use of force incidents that officers were involved in, as well as the types and levels of resistance they encountered from citizens, was related to use of force complaints from citizens. That is, those officers that were involved in more use of force situations were engaged in force encounters where the highest level of citizen resistance was “failure to comply,” and faced higher cumulative levels of citizen resistance, received more complaints alleging improper use of force.

Studies of citizen complaints against police officers, especially those alleging improper use of force, should consider the number of force incidents officers are involved in, as well as other theoretically relevant force correlates.

Administrators, concerned with citizen allegations for improper use of force against their officers, should work to encourage their personnel to minimize the number of use of force applications, or at least less cumulative force, to resolve encounters with citizens.

While prior studies have examined police use of force and citizen complaints independently, the current study examines the empirical connection between use of force behavior and the generation of complaints from citizens.

The current study examines the effect of changing a specific use-of-force policy coupled with de-escalation training implementation on patterns of police use of force.

An interrupted time-series analysis was used to examine changes in police use-of-force incident records gathered from a large, southwestern US metropolitan police department from 2013 to 2017 based on a TASER policy change and de-escalation training implementation mid-2015.

Results demonstrate that changes to use-of-force policy regarding one type of force (i.e. use of TASERs) coinciding with de-escalation training influence the prevalence of use-of-force incidents by increasing the reported police use-of-force incidents after the changes were implemented. This finding is somewhat consistent with prior literature but not always in the desired direction.

When police departments make adjustments to use-of-force policies and/or trainings, unintended consequences may occur. Police administrators should measure policy and training outcomes under an evidence-based policing paradigm prior to making those adjustments.

This study is the first to measure the effects of changing use-of-force policy and implementing de-escalation techniques in training on patterns of police use of force and shows that these changes can have a ripple effect across types of force used by police officers.

The present study examines a range of police force on the continuum (firearms, TASER/chemical spray and physical force) to see whether they are associated with individual (subject and officer), situational and/or neighborhood factors.

A partial proportional odds model is used to analyze police use of force data from 2003 to 2016 in Dallas. Independent variables are allowed for varying effects across the different cumulative dichotomizations of the dependent variable (firearms vs TASER/chemical spray and physical force and firearms and TASER/chemical spray vs physical force).

Most officer demographic and situational factors are consistently significant across the cumulative dichotomizations of police force. In addition, suspect race/ethnicity (Hispanic) and violent crime rates play significant roles when officers make decisions to use firearms, as opposed to TASER/chemical spray and physical force. Overall, situational variables (subject gun possession and contact types) play greater roles than other variables in affecting police use of force.

Despite the large body of police use of force research, little to no research has used the partial proportional odds model to examine the ordinal nature of police force from physical to intermediate to deadly force. The current findings can provide important implications for policy and research.

The purpose of this paper is to examine police use of force using individual, contextual, and police training factors, expanding prior research by including multiple police agencies in the sample, thus producing research findings that can be more easily generalized.

The data for the current study were derived from several primary sources: the Interuniversity Consortium for Political and Social Research (ICPSR). Census, Uniform Crime Reports (UCR), Bureau of Labor Statistics (BLS), and 1997 Law Enforcement Management and Administrative Statistics (LEMAS).

Among individual level variables, age and arrestee's resistance were significant explanatory factors. Violent crime rate and unemployment rate were significant factors as the neighborhood contextual variables. Finally, in‐service training was a significant organizational‐level explanatory factor for levels of police use of force.

The paper bridges the gap in research between contextual factors and police use of force. It also deepens our understandings of the association between organizational factors and use of force by incorporating police training into the analytical model.

The purpose of this paper is to systematically and comprehensively review the extant literature on measurement issues in police use of force.

The current study uses a narrative meta-review of measurement issues in police use of force through a systematic and exhaustive search of several academic databases (e.g. Criminal Justice Abstracts, EBSCO Host, PsychInfo, etc.).

The current meta-review identified 56 studies that matched the inclusion criteria. These studies examined public and police officer perceptions of use of force, rates of use of force, types of force used, neighborhood contextual correlates of use of force, and severity of force used. A wide variety of approaches were used to measure use of force, and operationalization of use of force was inconsistent across studies. This indicates a need for high-quality research focusing on comparable operationalization of variables, consistency in measurement, and use of more rigorous research techniques. The use of validated measures is essential moving forward.

The practical implications derived from this meta-review indicate a need for future researchers to carefully evaluate the measurement approaches used in use of force studies. The lack of consistency in measurement of use of force research is concerning, and a focused effort is required to validate measures.

The state-of-the-art review on measurement issues in police use of force is the first of its kind. This study comprehensively reviews the literature on measurement issues in police use of force. This study will be useful for those who wish to further explore measurement issues in police use of force issues in policing and those who wish to work toward validated use of force measures.

The range of tactical force options available to police is increasing, while public debate about police use of force is never far from the headlines. This paper aims to examine what factors shape how people accept police use of force.

The authors use two online experiments to test whether different force options affected judgments about the acceptability of police action and to explore the role of trust and legitimacy in people's judgments.

The authors found across both studies that respondents judged scenarios involving a weapon (baton, CS spray, Taser) as less acceptable compared to scenarios that did not (talking down, handcuffs), but they did not draw much distinction between the specific weapon used. In study 1, exposure to different police tactics had no effect on trust and legitimacy. In study 2, prior perceptions of trust were strong predictors of acceptability judgments.

There is a comparative paucity of British-based empirical research examining public attitudes toward different use of force resolutions by police. In this paper, the authors explore how use of force affects people's views of police at a time in which the nature and scope of force applications, how these are understood and indeed the basic enterprise of policing itself is being reconsidered and renegotiated.

The purpose of this paper is to examine the effect of police use of conducted energy devices (CEDs) on officer and suspect injuries while controlling for other types of force and resistance and other factors.

Data on 1,645 use‐of‐force incidents occurring between January 1, 2002 and July 2006 were obtained from two different law enforcement agencies. Logistic and generalized ordered logistic regressions are used to model the odds of injury and severity of injury.

The use of CEDs was associated with reduced odds of officer and suspect injury and the severity of suspect injury in one agency. In the other agency CED use was unrelated to the odds of injury; however, the use of pepper spray was associated with reduced odds of suspect injury. Among other findings, in both agencies the use of hands‐on tactics by police was associated with increased odds of officer and suspect injury, while the use of canines was associated with increased odds of suspect injury.

Although this research was carried out in two distinctly different law enforcement agencies with different histories of CED adoption, the fact that CED use was associated with reductions in injuries in one agency but not the other indicates the need for additional research on the impact of CED use in other settings

The analysis suggests that relative to other forms of force, the use of CEDs and pepper spray can reduce the risk of injury to both suspects and law enforcement officers. This information should prove useful to law enforcement agencies considering adopting CEDs and suggests that agencies should consider the use of these less lethal alternatives in place of hands‐on tactics against actively resistant suspects.

At the time of this writing there was no published independent research on the risks of injury associated with CED use in field settings. The findings reported herein will help inform the public debate on the utility of CEDs for law enforcement.