This study evaluates the effects of policing disorder, within a problem-oriented policing framework, at crime and disorder hot spots in lowell, massachusetts thirty-four hot spots were matched into 17 pairs, and one member of each pair was allocated to treatment conditions in a randomized block field experiment. “hot spots policing and crime prevention: a systematic review of randomized controlled trials” journal of experimental criminology 1:317–42 braga, anthony a 2006. For example, a 2005 harvard university metastudy published in the journal of experimental criminology, “hot spots policing and crime prevention: a systematic review of randomized controlled trials,” examined the effects of five randomized controlled trials of concentrating police enforcement efforts two of the five trials took place in minneapolis, minnesota two in jersey city, new jersey and one in kansas city.
Hotspots intervention, holds promise as an approach to reducing crime, and especially violent crime, which is a leading cause of death and injury in the united states (see miller, cohen, and rossman, 1993. General deterrent effects of police patrol in crime hot spots: a randomized, controlled trial justice quarterly, 12:4, 625-648 general deterrent effects of police patrol in crime hot spots: a randomized, controlled trial lawrence w sherman and david weisburd summary after the kansas city experiment, researchers and academics placed very little value on the ability of preventative routine patrols to deter crime.
The concentration of police resources in stable crime hotspots has proven effective in reducing crime, but the extent to which police can disrupt dynamically changing crime hotspots is unknown police must be able to anticipate the future location of dynamic hotspots to disrupt them. In recent years, researchers have argued that police actions should be focused on high-risk crime places rather than spread thinly across the urban landscape this review examines the available evaluation evidence on the effects of concentrating police enforcement efforts on crime hot spots five randomized experiments and four nonequivalent control group quasi-experiments were identified. Crime hot spots were operationally defined as small clusters of addresses with frequent crime calls for police service the final sample consisted of 110 hot spots where crime calls were concentrated between 7:00 pm and 3:00 am the 110 hot spots were randomly assigned to two groups of 55.
Crime theories can be a useful guide for researchers and analyst, in regard to analyzing crime hotspots there are many theories of crime that explain why crime occurs in certain places and why crime does not in others.
This article reports a one-year randomized trial in minneapolis of increases in patrol dosage at 55 of 110 crime “hot spots,” monitored by 7,542 hours of systematic observations the experimental group received, on average, twice as much observed patrol presence, although the ratio displayed wide seasonal fluctuation.
Policing crime and disorder hot spots: a randomized controlled trial authors anthony a braga, within a problem-oriented policing framework, at crime and disorder hot spots in lowell, massachusetts thirty-four hot spots were matched into 17 pairs, and one member of each pair was allocated to treatment conditions in a randomized block. Policing crime and disorder hot spots: a randomized controlled trial criminology, 46 (3) , 577-607 2 place characteristics, local dynamics, and lowell police department patrol officer perceptions of crime problems.
Full-text paper (pdf): general deterrent effects of police patrol in crime hot spots: a randomized, controlled trial.
A randomized controlled trial of different policing strategies at hot spots of violent crime, 2011 three-arms trial with control, standard hot spot policing and problem-oriented policing group problem oriented policing is a policing tactic where the police works in teams that include a crime analyst to target the root causes of crime.