This project provided the first large-scale examination of the police response to intimate partner violence and of the practice known as "dual arrest." The objectives of the project were: (1) to describe the prevalence and context of dual arrest in the United States, (2) to explain the variance in dual arrest rates throughout the United States, (3) to describe dual arrest within the full range of the police response to intimate partner violence, (4) to analyze the factors associated with no arrest, single arrest, and dual arrest, (5) to examine the reasons why women are arrested in intimate partner cases, and (6) to describe how the criminal justice system treats women who have been arrested for domestic violence. Data for the project were collected in two phases. In Phase I, researchers examined all assault and intimidation cases in the year 2000 National Incident-Based Reporting System (NIBRS) database (NATIONAL INCIDENT-BASED REPORTING SYSTEM, 2000 [ICPSR 3449]) to investigate the extent to which dual arrest is occurring nationwide, the relationship between incident and offender characteristics, and the effect of state laws on police handling of these cases for all relationship types. Because the NIBRS dataset contained a limited number of incident-specific variables that helped explain divergent arrest practices, in Phase II, researchers collected more detailed information on a subset of NIBRS cases from 25 police departments of varying sizes across four states. This phase of the study was restricted to intimate partner and other domestic violence cases. Additional data were collected for these cases to evaluate court case outcomes and subsequent re-offending. This phase also included an assessment of how closely department policy reflected state law in a larger sample of agencies within five states. The data in Part 1 (Phase I Data) contain 577,862 records from the NIBRS. This includes information related to domestic violence incidents such as the most serious offense against the victim, the most serious victim injury, the assault type, date of incident, and the counts of offenses, offenders, victims, and arrests for the incident. The data also include information related to the parties involved in the incident including demographics for the victim(s) and arrestee(s) and the relationship between victim(s) and arrestee(s). There is also information related to the jurisdiction in which the incident occurred such as population, urban/rural classification, and whether the jurisdiction is located in a metropolitan area. There are also variables pertaining to whether a weapon was used, the date of arrest, and the type of arrest. Also included are variables regarding the police department such as the number of male and female police officers and civilians employed. The data in Part 2 (Phase II Data) contain 4,388 cases and include all of the same variables as those in Part 1. In addition to these variables, there are variables such as whether the offender was on the scene when the police arrived, who reported the incident, the exact nature of injuries suffered by the involved parties, victim and offender substance use, offender demeanor, and presence of children. Also included are variables related to the number of people including police and civilians who were on the scene, the number of people who were questioned, whether there were warrants for the victim(s) or offender(s), whether citations were issued, whether arrests were made, whether any cases were prosecuted, the number of charges filed and against whom, and the sentences for prosecuted cases that resulted in conviction. The data in Part 3 (Police Department Policy Data) contain 282 cases and include variables regarding whether the department had a domestic violence policy, what the department's arrest policy was, whether a police report needed to be made, whether the policy addressed mutual violence, whether the policy instructed how to determine the primary aggressor,

This study examined the impacts of jurisdictions' domestic violence policies on violent behavior of family members and intimate partners, on the likelihood that the police discovered an incident, and on the likelihood that the police made an arrest. The research combined two datasets. Part 1 contains information on police, prosecution policies, and local victim services. Informants within the local agencies of the 50 largest cities in the United States were contacted and asked to complete a survey inventorying policies and activities by type and year of implementation. Data from completed surveys covered 48 cities from 1976 to 1996. Part 2 contains data on domestic violence laws. Data on state statutes from 1976 to 1997 that related to protection orders were collected by a legal expert for all 50 states and the District of Columbia.

The purpose of this research was to improve understanding of the conditions under which criminal sanctions do and do not reduce repeat violence between intimate partners. This study involved repeated reading and close inspection of four documents in order to compare and contrast the multivariate analyses reported by John Wooldredge and Amy Thistlethwaite (RECONSIDERING DOMESTIC VIOLENCE RECIDIVISM: INDIVIDUAL AND CONTEXTUAL EFFECTS OF COURT DISPOSITIONS AND STAKE IN CONFORMITY IN HAMILTON COUNTY, OHIO, 1993-1998 [ICPSR 3013]). The first part of this study's design involved the detailed literature review of four Wooldredge and Thistlethwaite publications between the years 1999 and 2005. The second element of the study's design required researchers to gain a detailed understanding of the archived data using the documentation provided by Wooldredge. The third element of the study's secondary analysis research design involved using the identified variables to reproduce the multivariate empirical findings about the effects of sanctions, stakes, and social context on repeat offending. These findings were presented in a series of tables in the four Wooldredge and Thistlethwaite publications. After numerous iterations of reading reports and documentation and exploring alternative measures and methods, researchers produced a report detailing their ability to reproduce Wooldredge and Thistlethwaite's descriptive measures. This study's design called for using explicit criteria for determining the extent to which Wooldredge and Thistlethwaite's findings could be reproduced. Researchers developed and applied three criteria for making that determination. The first was a simple comparison of the regression coefficients and standard errors. The second criterion was a determination of whether the reproduced results conformed to the direction and statistical significance levels of the original analyses. The third criterion was to apply a statistical test to assess the significance of any differences in the sizes of the original and the reproduced coefficients. The data archived by Wooldredge provided seven dichotomous measures of criminal sanctions (no charges filed, dismissed, acquitted, a treatment program, probation only, jail only, and a combination of probation and jail). Part of the design of this study was to go beyond reproducing Wooldredge and Thistlethwaite's approaches and to reformulate the available measures of criminal sanctions to more directly test the prosecution, conviction, and sentence severity hypotheses. The researchers produced these tests by constructing three new measures of criminal sanctions (prosecution, conviction, and sanction severity) and testing each of them in separate multivariate models. The Part 1 (Hamilton County, Ohio, Census Tract Data) data file contains 206 cases and 35 variables. The Part 2 (Neighborhood Data) data file contains 47 cases and 12 variables. The variables in Part 1 (Hamilton County, Ohio, Census Tract Data) include a census tract indicator, median household income of tract, several proportions such as number of college graduates in the tract and corresponding Z-scores, a regression factor score for analysis 1, a socio-economic factor, a census tract number for the city of Cincinnati, Ohio, and a Cincinnati neighborhoods indicator. Variables in Part 2 (Neighborhood Data) include a neighborhood indicator, average age in the neighborhood, demographic proportions such as proportion male in the neighborhood and proportion of college graduates in the neighborhood, and a social class factor.

This data collection contains information on 330 incidents of domestic violence in Minneapolis. Part 1, Police Data, contains data from the initial police reports filled out after each incident. Parts 2-5 are based on interviews that were conducted with all parties to the domestic assaults. Information for Part 2, Initial Data, was gathered from the victims after the incidents. Part 3, Follow-Up Data, consists of data from follow-up interviews with the victims and with relatives and acquaintances of both victims and suspects. There could be up to 12 contacts per case. Suspect interviews are the source for Part 4, Suspect Data. An experimental section, Part 5, Repeat Data, contains information on repeat incidents of domestic assault from interviews with victims. Parts 2-5 include items such as socioeconomic and demographic data describing the suspect and the victim, relationship (husband, wife, boyfriend, girlfriend, lover, divorced, separated), nature of the argument that spurred the assault, presence or absence of physical violence, and the nature and extent of police contact in the incident. The collection also includes police records, which are the basis for Parts 6-9. These files record the date of the crime, ethnicity of the participants, presence or absence of alcohol or drugs and weapons, and whether a police assault occurred.

This study examined the amount of force used by and against law enforcement officers and more than 50 characteristics of officers, civilians, and arrest situations associated with the use of different levels of force. An important component of this multijurisdiction project was to employ a common measurement of elements of force and predictors of force. Data were gathered about suspects' and police officers' behaviors from adult custody arrests in six urban law enforcement agencies. The participating agencies were the Charlotte-Mecklenburg (North Carolina) Police Department, Colorado Springs (Colorado) Police Department, Dallas (Texas) Police Department, St. Petersburg (Florida) Police Department, San Diego (California) Police Department, and San Diego County (California) Sheriff's Department. Data collection began at different times in the participating departments, so the total sample included arrests during the summer, fall, and winter of 1996-1997. Forms were completed and coded for 7,512 adult custody arrests (Part 1). This form was used to record officer self-reports on the characteristics of the arrest situation, the suspects, and the officers, and the specific behavioral acts of officers, suspects, and bystanders in a particular arrest. Similar items were asked of 1,156 suspects interviewed in local jails at the time they were booked following arrest to obtain an independent assessment of officer and suspect use of force (Part 2). Officers were informed that some suspects would be interviewed, but they did not know which would be interviewed or when. Using the items included on the police survey, the research team constructed four measures of force used by police officers -- physical force, physical force plus threats, continuum of force, and maximum force. Four comparable measures of force used by arrested suspects were also developed. These measures are included in the data for Part 1. Each measure was derived by combining specific actions by law enforcement officers or by suspects in various ways. The first measure was a traditional conceptual dichotomy of arrests in which physical force was or was not used. For both the police and for suspects, the definition of physical force included any arrest in which a weapon or weaponless tactic was used. In addition, police arrests in which officers used a severe restraint were included. The second measure, physical force plus threats, was similar to physical force but added the use of threats and displays of weapons. To address the potential limitations of these two dichotomous measures, two other measures were developed. The continuum-of-force measure captured the levels of force commonly used in official policies by the participating law enforcement agencies. To construct the fourth measure, maximum force, 503 experienced officers in five of the six jurisdictions ranked a variety of hypothetical types of force by officers and by suspects on a scale from 1 (least forceful) to 100 (most forceful). Officers were asked to rank these items based on their own personal experience, not official policy. These rankings of police and suspect use of force, which appear in Part 3, were averaged for each jurisdiction and used in Part 1 to weight the behaviors that occurred in the sampled arrests. Variables for Parts 1 and 2 include nature of the arrest, features of the arrest location, mobilization of the police, and officer and suspect characteristics. Part 3 provides officer rankings on 54 items that suspects might do or say during an arrest. Separately, officers ranked a series of 44 items that a police officer might do or say during an arrest. These items include spitting, shouting or cursing, hitting, wrestling, pushing, resisting, fleeing, commanding, using conversational voice, and using pressure point holds, as well as possession, display, threat of use, or use of several weapons (e.g., knife, chemical agent, dog, blunt object, handgun, motor vehicle).

The goal of this study was to identify factors that influence whether city misdemeanor domestic violence cases in which batterers are arrested by police result in dismissals, acquittals, or convictions in the courts, and how these cases are processed. The researchers sought to examine factors that influence court officials' decision-making in domestic violence cases, as well as factors that influence victim and witness reluctance in bringing batterers to successful adjudication. In Part 1 researchers merged pretrial services data with information from police and prosecutors' reports in the urban area under study to answer the following questions: (1) What is the rate of dismissals, acquittals, and convictions for misdemeanor court cases and what are the conditions of these sentences? (2) What factors in court cases are significantly related to whether the disposition is a dismissal, acquittal, or conviction, and how are these cases processed? In Part 2, judges, prosecutors, and public defenders were asked detailed questions about their level of knowledge about, attitudes toward, and self-reported behaviors regarding the processing of domestic violence cases to find out: (1) What roles do legal and extra-legal factors play in decision-makers' self-reported behaviors and attitudes? (2) How do decision-makers rate victim advocate and batterer treatment programs? (3) How do court professionals view the victim's role in the court process? and (4) To what degree do court professionals report victim-blaming attitudes and experiences? For Part 3 researchers used a stratified random sample to select court cases of misdemeanor domestic violence that would be transcribed and used for a content analysis to examine: (1) Who speaks in court and how? and (2) What is considered relevant by different court players? In Parts 4-103 victim surveys and interviews were administered to learn about battered women's experiences in both their personal lives and the criminal processing system. Researchers sought to answer the following questions: (1) How do victim/witnesses perceive their role in the prosecution of their abusers? (2) What factors inhibit them from pursuing prosecution? (3) What factors might help them pursue prosecution? and (4) How consistent are the victims'/witnesses' demographic and psychological profiles with existing research in this area? Domestic violence victims attending arraignment between January 1 and December 31 of 1997 were asked to complete surveys to identify their concerns about testifying against their partners and to evaluate the effectiveness of the court system in dealing with domestic violence cases (Part 4). The disposition of each case was subsequently determined by a research team member's examination of defendants' case files and/or court computer files. Upon case closure victims who had both completed a survey and indicated a willingness to be interviewed were contacted to participate in an interview (Parts 5-103). Variables in Part 1, Pretrial Services Data, include prior criminal history, current charges, case disposition, sentence, victim testimony, police testimony, victim's demeanor at trial, judge's conduct, type of abuse involved, weapons used, injuries sustained, and type of evidence available for trial. Demographic variables include age, sex, and race of defendants, victims, prosecutors, and judges. In Part 2, Professional Survey Data, respondents were asked about their tolerance for victims and offenders who appeared in court more than once, actions taken when substance abuse was involved, the importance of injuries in making a decision, attitudes toward battered women, the role of victim advocates and the police, views on restraining orders, and opinion on whether arrest is a deterrent. Demographic variables include age, sex, race, marital status, and years of professional experience. Variables in Part 3, Court Transcript Data, include number and type of charges, pleas, reasons for dismissals,

The purpose of the research project was to examine the extent to which the perception of procedural fairness by suspects arrested for spouse assault effectively inhibited their subsequent violence. The data for this study were collected for the MILWAUKEE DOMESTIC VIOLENCE EXPERIMENT, 1987-1989 (ICPSR 9966), which was conducted from April 1987 to August 1988. In this experiment, all cases of misdemeanor domestic battery where probable cause to arrest existed were randomly assigned to one of three conditions: (1) warning with no arrest, (2) arrest with a brief detention period (average of 3 hours), and (3) arrest with a longer detention period (average of 11 hours). Variables include demographic and background information, as well as descriptive variables pertaining to the domestic violence incident.

The specific goals of this project were (1) to assess the selection criteria used to determine the domestic violence cases for intensive intervention: what criteria are used, and what differentiates how cases are handled, (2) to track the outcomes through Charlotte-Mecklenburg Police Department (CMPD), Mecklenburg domestic violence court, and the Mecklenburg jail for the different methods of dealing with the cases, and (3) to provide an assessment of the relative effectiveness of a specialized domestic violence unit vis-a-vis normal patrol unit responses in terms of repeat calls, court processing, victim harm, and repeat arrests. The population from which the sample was selected consisted of all police complaint numbers for cases involving domestic violence (DV) in 2003. The unit of analysis was therefore the domestic violence incident. Cases were selected using a randomized stratified sample (stratifying by month) that also triple-sampled DV Unit cases, which generated 255 DV Unit cases for inclusion. The final sample therefore consists of 891 domestic violence cases, each involving one victim and one suspect. Within this final sample of cases, 25 percent were processed by the DV Unit. The data file contains data from multiple sources. Included from the police department's computerized database (KBCOPS) are variables pertaining to the nature of the crime, victim information and suspect information such as suspect and victim demographic data, victim/offender relationship, highest offense category, weapon usage, victim injury, and case disposition status. From police narratives come such variables as victim/offender relationship, weapon use (more refined than what is included in KBCOPS data), victim injury (also a more refined measure), and evidence collected. Variables from tracking data include information regarding the nature of the offense, the level/type of harm inflicted, and if the assault involved the same victim in the sample. Variables such as amount of jail time a suspect may have had, information pertaining to the court charges (as opposed to the charges at arrest) and case disposition status are included from court and jail data.

The purpose of this study was to replicate an experiment in Minneapolis (MINNEAPOLIS INTERVENTION PROJECT, 1986-1987 [ICPSR 9808]) testing alternative police response to cases of spouse assault, using a larger number of subjects and a more complex research design. The study focused on how police response affected subsequent incidents of spouse assault. Police responses studied included arrest, issuing emergency protection orders, referring the suspect to counseling, separating the suspect and the victim, and restoring order only (no specific action). Data were obtained through initial incident reports, counseling information, and personal interviews. Follow-up interviews were conducted at three- and six-month periods, and recidivists were identified through police and court record checks. Variables from initial incident reports include number of charges, date, location, and disposition of charges, weapon(s) used, victim injuries, medical attention received, behavior towards police, victim and suspect comments, and demographic information such as race, sex, relationship to victim/offender, age, and past victim/offender history. Data collected from counseling forms provide information on demographic characteristics of the suspect, type of counseling, topics covered in counseling, suspect's level of participation, and therapist comments. Court records investigate victim and suspect criminal histories, including descriptions of charges and their disposition, conditions of pretrial release, and the victim's contact with pretrial services. Other variables included in follow-up checks focus on criminal and offense history of the suspect. The data collection includes separate data files for the original, second, and final versions of some of the forms that were used.