Study Search Results Your query returned 2 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. (?) Study Title/Investigator 1. Early Identification of the Chronic Offender, [1978-1980: California] (ICPSR 8226) Haapanen, Rudy A.; Jesness, Carl F. 2. Longitudinal Study of Criminal Career Patterns of Former California Youth Authority Wards, 1965-1984 (ICPSR 2478) Haapanen, Rudy A.