Study Search Results Your query returned 1 results. Series results are grouped under the most relevant study. You can ungroup series results. Use the search box below to revise your search, or start a new search. Results per page: 25 50 100 Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Most Downloaded (?) Study Title/Investigator 1. Developing Uniform Performance Measures for Policing in the United States: A Pilot Project in Four Agencies, 2008-2009 (ICPSR 29742) Davis, Robert C.; Ortiz, Chris; Cordner, Gary; et al.