Study Search Results Your query returned 3 results. Results per page: 25 50 100 Sort by: Study Relevance Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Variable Relevance (?) Study Title/Investigator 1. Iowa Youth and Families Project, 1989-1992 (ICPSR 26721) Conger, Rand D.; Lasley, Paul; Lorenz, Frederick O.; et al. 2. Evaluation of the Hawaii Opportunity Probation with Enforcement (HOPE) Community Supervision Strategy, 2007-2009 (ICPSR 27921) Hawken, Angela 3. Criminal Justice Drug Abuse Treatment Studies (CJ-DATS) 2: Organizational Process Improvement Intervention (OPII), 2010-2013 [United States] (ICPSR 35082) Prendergast, Michael; Shafer, Michael; Frisman, Linda; et al.