Differences Between High and Low Performing Police Agencies in Clearing Robberies, Aggravated Assaults, and Burglaries: Findings From an Eight-Agency Case Study

By Cynthia Lum, Charles Wellford, Thomas Scott, Heather Vovak, Jacqueline A. Scherer and Michael Goodier

This eight-agency case study analyzes the characteristics of four high-and four low-performing police agencies, as measured by their long-term crime clearance rates. High and low performers were identified through a systematic assessment of 30 years of clearance rates of robberies, aggravated assaults, burglaries, and homicides for the largest 100 police departments in the United States. Researchers then conducted in-depth case studies of eight of these agencies—four of the highest and four of the lowest ranking in terms of their investigative practices. Comparisons of high-and low-performing agencies reveal differences in organizational structure; leadership and resources; selection, training, and performance review for investigators; case assignment and investigative processes; and community interactions. These findings provide direct guidance to agencies seeking to strengthen their investigative organization and practices.

Police QuarterlyVolume 27, Issue 2, June 2024, Pages 135-157