Predicting aggression in police officers using the MMPI-2

This study attempted to determine if any of four MMPI-2 scales formulated to measure various forms of hostility or aggression is useful in predicting aggressive behavior among police officers. In our analysis of 80 officers from two police departments, we found that some scales predicted supervisor ratings of officer performance in one of the departments but not in the second department. In one department, officers with higher ANG scores or HOS scores, or lower O-H scores, were judged by supervisors to be more assertive. Officers from the same department with higher HO scores or lower O-H scores received moire justified citizen complaints. We discuss the importance of predicting aggression in police officers, the difficulty of making this prediction using MMPI-2 scores, and differences between the two departments that might have impacted the outcome of this research. Authors' Note: Communications should be addressed to the authors at James Madison University, School of Psychology, MSC 7401, Harrisonburg VA 22807.     

The relationship between education level and performance ratings of campus police officers

Data from 165 campus police officers at 16 campus police departments were used to investigate the relationship between educational level and performance of campus police officers. The results of the study indicated that education was significantly related to supervisor ratings of report writing proficiency (r=.29) and communication skills (r=20) but not discipline problems (r=−.01) or overall performance (r=.10). The relationship between education and report writing proficiency was moderated by years of police experience as education predicted performance in officers with five or more years experience but not those with less than five years experience.     

The MMPI-2 and statisfactory police academy performance: Differences and correlations

The Minnesota Multiphasic Personality Inventory (MMPI) and its later revision (MMPI-2) have been the most frequently employed psychological instrument in the selection of law enforcement officers (Bartol, 1996). In this study, state police trooper cadets were given a broad number of measures including the MMPI-2 prior to academy admission. Their performance at the police academy was then analyzed and related to their performance on the MMPI-2. Using step-wise multiple linear regression. Hy3 and Sc4 scores produced significant negative correlation’s with academy final grade point average. Student’s unpaired 1-tests between successful and unsuccessful cadets revealed differences between the groups for several MMPI-2 subscales including, but not limited to, K, MA, and SI, Lastly, logistic regression revealed no single subscale, or combination of subscales, which significantly predicted classification of the cadets as either successful or unsuccessful based on their MMPI-2 scores alone. Author Note: Elements of this article have been presented at the 27^th Annual Conference of the Society of Police and Criminal Psychology in Portland, OR, October 1998.     

Use of force by female police officers

Do female police officers use force at the same rate as male police officers? This research examined the use of force by officers in a large, suburban police department during a seven-year period (1993-1999). Use of force reports completed by departmental policy for each use-of-force incident (n = 1,863) and data on arrests (n = 31,778) were examined. A rate of force, defined as the number of use-of-force incidents per one hundred arrests, was computed for male and female officers for each type of force used. A suspect-injury rate, defined as the number of suspects injured per one hundred arrests, also was computed.Force was used in only a small percentage (5.9 percent) of the arrests made. Injury to the suspect (not including the effects of OC spray) occurred in an even smaller percentage (1.6 percent) of arrests, and injury to the suspect resulting in treatment at a hospital (generally, emergency room treatment) occurred in a still smaller percentage (0.7 percent) of arrests.No statistically significant difference between female and male officers was found in the overall rate of force or in the rate of unarmed physical force. Female officers had a lower rate of weapon use when all types of weapons were considered together (p. < 0.05), but not when the different types of weapons were considered individually. Female officers also had a lower rate of any suspect injury (p. < 0.05), but there was no statistically significant difference in the rate of suspect injury resulting in treatment at a hospital. The differences found, even when statistically significant, were small in absolute terms.     

Use of the MMPI-2 and the Inwald personality inventory to identify the personality characteristics of dropouts from a state police academy

The MMPI-2 and the Inwald Personality Inventory were employed to investigate the personality characteristics of dropouts from a state police academy. A traditional model of training borrowed from military models was used at the academy rather than a police generated model. Sensitive and independent individuals, more compatible with modern community policing methods may have rejected police work as a result of the experience. 15 academy completers and 9 dropouts were used in the sample. Analyses of the scales of the MMPI-2 and the Inwald Personality Inventory identified variables upon which the two groups differed. The hypothesis that more sensitive, empathic and independent individuals were leaving the academy appeared to be supported.     

A three-year follow-up of the performance of a class of state police academy graduates using the MMPI-2

Research has demonstrated the utility of the MMPI-2 in identifying good and poor performance, dissatisfaction, termination, low performance ratings, unsatisfactory and satisfactory criterion groups, problematic behavior, corruption, and aggression. There is much research to suggest that certain patterns of responding to this measure by officer applicants predict job performance behaviors that supervisors and police executives view unfavorably. This study illustrates the fact that variables which are likely to predict police performance are less obvious and more subtle. Discussion centers on repression and underlying hostility. Authors' Note: William U. Weiss, Ph.D., is professor of psychology, The University of Evansville, 1800 Lincoln Avenue, Evansville IN 47722. At the time this study was done, Jessica Johnson was an undergraduate student research assistant. Gerald F. Serafino, Ph.D., and Ann Serafino are in private practice in Roswell, New Mexico.     

The effects of occupational stress on cognitive performance in police officers

The occupational stress of police officers, and its’ effect on working memory and other psychological and behavioral factors over a two-week work period have been investigated. Cognitive performance and stress levels were examined at pre and post work cycles by using a memory test and several self-reporting surveys, each designed for a specific purpose and to gauge a particular set of behaviors and personality traits. The police officers were assigned to patrol duties at the time of the investigation and placed into three groups based on years of service (1–20 years). The results of the investigation identified a deficit in working memory in Junior, Veteran, and Senior Officers, based on the Ray Osterreith Complex Figure Scores at Baseline (pre-stress) vs. Test Day (post-stress). The other survey tools measuring stress impact on personality and behavior, did not demonstrate any statistical differences in the responding groups of officers in their survey performances.     

Attitudes to corruption amongst Russian police officers and trainees

The police are perceived by overseas agencies to play a key role in thedevelopment of democratic states. In the Russian Federation, the promotion of trust between the police and the public has been hampered by the fact that police are perceived by the public, and reported by the media, to be open to using their positions at work to obtain money, goods or services. Survey research about beliefs and values concerning corruption was conductedamongst students and serving officers attending a police institute, whichprovides the most promising Russian police recruits with a four-year higher education leading to the rank of ``officer'. From these ranks will come those police who are likely in future to shape both policy and institutional values. The data provided evidence that ``fast-streamed' police recruits think that corruption is often justifiable and/or morally acceptable underparticular circumstances, or for particular goals.     

Variation in the perception of desired qualities of police officers among trainees and senior police officers. Insights into the process and efficacy of police training

Police training is the process of imparting knowledge, skills, and values to police personnel. The study analyses a survey data on the perception of trainees and senior experienced officers regarding desired professional qualities in police officers. There is a high degree of congruence, in the assessment of values which are important for police, among the two groups. There are also differences among the two groups regarding the evaluation of the importance of interpersonal skills and human qualities. The study attempts to explain the similarities and the differences in perception by examining the conservative and innovative nature of police training, and the role of experience in developing an appreciation of human qualities. The study underlines the importance of police training as a mechanism to maintain the stability of operations in the organisation and its pivotal role in bringing about change in the police.     

Use of the MMPI-2 in the treatment of offenders

The MMPI-2 is among the most frequently relied upon inventories for personality assessment. The test is utilized across a variety of nonforensic settings (e.g., psychiatric inpatient and outpatient) as an aid in formulating treatment plans, assessing treatment progress, and measuring treatment outcome. The MMPI-2 can also be utilized in forensic settings in a manner similar to its use in other settings, such as identifying treatment goals and evaluating treatment efficacy. Various MMPI-2 scales can identify an individual's treatment needs, reveal potential obstacles to treatment, and serve as a measure of treatment efficacy. Such information can be very helpful to the clinician in formulating or modifying a course of treatment for offenders. This article provides an overview of the use of the MMPI-2 in treatment planning and describes the relation between scores on the validity, clinical, and various supplementary scales and treatment-related issues.     

SWAT and non-SWAT police officers and the use of force

Although many police departments use Special Weapons and Tactics (SWAT) teams, surprisingly there is very little research on them. This study examined the use of force by SWAT and non-SWAT police officers. SWAT officers may be socialized to use force as a result of the dangerous situations they frequently encounter, and thus more likely to use force in non-SWAT situations. The results of this research note, however, indicated there was a statistical nonsignificant relationship between SWAT status and the use of force. Implications of the findings of this study are discussed.     

Comparison of the MMPI-2 and Niederhoffer Cynicism Scales for a Sample of police academy trainees

This study compared the Niederhoffer Cynicism Scale, as a less costly alternative, to the MMPI-2 measure of cynicism. Data were collected on both scales from a sample of male and female police academy trainees to compare reliability and construct validity. Subgroup analyses by race and sex yielded comparable Cronbach alpha estimates for minority (.71) and majority (.83) males to MMPI-2 norms. The Niederhoffer reliability values were marginally smaller (.73 to .77) but within the acceptable range. Construct validity correlations between both scales were significant for minority and majority males. However, sample size was too small for both minority and majority females groups to use appropriate statistical techniques to determine reliability or validity. Continued use of the Niederhoffer is recommended for minority and majority males. Author's Note: This paper was presented at the 44^th Annual Meeting of the Western Social Science Association in Albuquerque, NM, in April of 2002.     

Uncertainty and the use of force among Venezuelan police officers

Literature often emphasizes the use of force as a distinctive feature of police work, while risky encounters and uncertainty are conditions under which such work is carried out daily. Conditions leading to the use of force by the police have been associated with the presence of menacing minorities, losing verbal control, the youth and lack of experience of officers, and critical physical proximity between officers and suspects. Additionally, defiance towards the police has often been linked to increased force used by the police. It is here proposed that uncertainty also fosters police officers’ dispositions to use force. In this study, four focus groups were conducted with officers from two Venezuelan municipal police departments in October 2003, presenting a hypothetical scenario progressing from contact with suspects towards an open confrontation involving a shooting. Officers perceived, through different phases of the scenario, an encounter of no easily predictable outcome with suspects, involving potential harm to the police and bystanders. A pattern seemed to appear among officers in which overcoming real or assumed resistance became the central issue. When physical confrontation with suspects became evident, self defence was the clearest justification for the use of force, though the use of force was also defended by officers without further elaboration on the requirements and conditions for effectively thwarting aggression. It appears that uncertainty about the outcome of a situation fosters both the disposition and the justification for using force.

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An investigation into the usefulness of the MMPI and MMPI-2 in municipal and state police candidate selection

The Minnesota Multiphasic Personality Inventory (MMPI) and the later revision (MMPI-2) have been two of the most frequently employed instruments in the selection of law enforcement officers (Bartol, 1996). In this study, the following three sets of data were collected and analyzed: municipal law enforcement officer candidates tested with the MMPI, municipal law enforcement officer candidates tested with the MMPI-2, and state police trooper candidates tested with the MMPI-2. These three data sets were evaluated for their effectiveness at predicting “pass/fail” status on police candidate interview using multiple linear regression. A combination of subscales were found to be associated with classification as either pass or fail on interview.     

Diversifying the police applicant pool: motivations of women and minority candidates seeking police employment

Given the media attention to police killings of unarmed men of color, police agencies have increased their focus on the diversity of their applicant pools. Despite their efforts, policing leaders across the United States have cited challenges in recruiting a diverse police force and are exploring evidence-based solutions. However, the bulk of the literature on motivation to seek a career in policing is dated and includes small samples of women and minority respondents. The purpose of this study is to provide contemporary insight into reasons of women and minority candidates for applying to a police department. Thus, this study focuses on women and minority applicants to a large policing agency in the northeastern United States, asking respondents an open-ended question about their motivation to apply. Policing as a childhood dream, making a difference in the community and the opportunity to help people, and believing policing was a good transition from military to civilian life were the most commonly cited reasons for applying. Salary, benefits and job security were the least cited reasons for applying for a police position. Other findings and policy implications are discussed.     

Ethical orientations of state police recruits and one-year experienced officers

The ethical orientations of police recruits in a large state police organization were identified using an Ethical Orientation Questionnaire that measured scales of idealism and relativism. The ethical orientations of officers from the same organizations who had one year of experience were also identified. This research examined the ethical orientations of these two groups, the ethical orientation differences between the two groups, and characteristics associated with those differences. There were significant differences in the ethical orientation between the two groups. New recruits tend toward the idealistic ethical dimension more than one-year officers. One-year officers tend more toward the relativistic ethical dimension than new recruits. Education is a significant factor in ethical orientation.