In the case of domestic violence and many other offenses , offenders often show little rational behavior. Sometimes when police respond, they arrest both parties involved in a domestic violence situation. Most important was a change in the procedural rules binding police arrest powers. Interviews were conducted during a 6-month follow-up period, with both victims and offenders, as well as official records consulted to determine whether or not re-offending had occurred. Criticism[ edit ] The Minneapolis study was criticized for its methods and its conclusions. Suspects who were employed were more likely to be deterred by arrest, but unemployed suspects were more likely to engage in escalating violence. The NIJ also reported that "arrest occurred more frequently in cases involving intimate partners if the offender was white" and "cases involving intimate partners and acquaintances were more likely to result in arrest if the offender was 21 or older".
Despite slight variations based in local conditions at each site, all five SARP experiments followed the Minneapolis model closely enough to allow valid comparisons. The officer must also be able to identify the "predominant aggressor"  Modern arrests[ edit ] Research has consistently reported an increase in the use of arrest for domestic violence in the United States. The NIJ also reported that "arrest occurred more frequently in cases involving intimate partners if the offender was white" and "cases involving intimate partners and acquaintances were more likely to result in arrest if the offender was 21 or older". Its major finding was that persons who were arrested were violent again at a much lower rate than those who were dealt with in other ways. Most were cohabitating, some apparently only for a short time. The study found that the offenders assigned to be arrested had lower rates of re-offending than offenders assigned to counseling or temporarily sent away. The study lasted approximately 17 months and included cases. History of mandatory arrest policy in the U. Both the victim and offender needed to still be present when the police arrived, in order to be included in the study. The Violence Against Women Act of added to the volume of legislation in the s pertaining to mandatory arrest laws, affecting those states that lacked such laws themselves. New laws created a time-specific window during which the police could make an arrest on probable cause in domestic violence cases: The publicity and the policy response generated considerable debate among researchers but succeeded in highlighting the need for replication. Results were slightly more positive for a period of thirty to sixty days after the initial contact, with four sites finding significant or borderline reductions in violence in the short term. The experiment also helped to raise public awareness of the issue of domestic violence and prompted the police to reconsider their long-held assumptions. For instance, Wisconsin has a list of requirements that must be met before an officer can arrest a suspect. Victims were asked about subsequent violence at two-week intervals after the initial incident. A court order in New York City mandated that arrests only be made in cases of serious violence, thus officers instead made effort to mediate family disputes. Currently, 23 states use mandatory arrest policies. Advocates in turn pointed to the many cases when women tried to extricate themselves from abusive conditions but were actively discouraged from doing so by the police. An offender who assaulted a police officer would be arrested for that offense, negating the protocol as well. For all intimate partner relationships, offenders were more likely to be arrested if the incident of violence was a serious aggravated assault. The MDVE is noteworthy for three reasons. Funded by a grant from NIJ, the experiment consisted of a volunteer team of police officers who responded to eligible incidents of misdemeanor assault. Thirty-eight officers were trained at the outset, and another eighteen later joined the experiment. Methodology[ edit ] The Minneapolis Domestic Violence Experiment looked at effectiveness of methods used by police to reduce domestic violence. This "mediation" consisted of a variety of approaches, including attempts by officers to convince the parties to reconcile immediately at the scene or to use formal alternative dispute resolution programs. These include the age of the suspect s , their relationship to the victim s , and whether the act could be considered an intentional assault.
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