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Kansas City Preventive Patrol Experiment (From Police and Policing: Contemporary Issues, P 45-59, 1989, Dennis Jay Kenney, ed. -- See NCJ-121271)

NCJ Number
G L Kelling; A M Pate; D Dieckman; C E Brown
Date Published
15 pages
An experiment involving variations in the level of routine preventive patrol within 15 Kansas City police beats found that decreasing or increasing routine preventive patrol within the range tested had no effect on crime, citizen fear of crime, community attitudes toward the police, the delivery of police service, police response time, or traffic accidents.
The 12-month Kansas City experiment began in 1972 under a grant from the Police Foundation. It took place in a 32-square-mile area that had a 1970 population of 148,395 and that had a mixture of commercial and residential development. Study data came from official statistics, participant observations, and surveys of citizens and businesses. A total of 648 comparisons were used to produce the study's major findings. Six percent of these findings were statistically significant. The data showed overwhelmingly that changes in patrol levels did not affect the factors studied.