Study Search Results Your query returned 4 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: Study Relevance Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Most Downloaded Variable Relevance (?) Study Title/Investigator 1. Evaluation of the Adolescent Portable Therapy (APT) Program [New York City], 2001-2004 (ICPSR 4299) Parsons, James; Ross, Tim 2. Project on Human Development in Chicago Neighborhoods (PHDCN): Drug Use, Wave 3, 2000-2002 (ICPSR 13694) Earls, Felton J.; Brooks-Gunn, Jeanne; Raudenbush, Stephen W.; et al. 4 more results in Project on Human Development in Chicago Neighborhoods (PHDCN) Series 3. Center for Education and Drug Abuse Research (CEDAR): Etiological and Prospective Family Study in Southwestern Pennsylvania, Baseline Data, 1990-2011 (ICPSR 33444) Tarter, Ralph E. 4. Northwestern Juvenile Project (Cook County, IL): Baseline, 1995-1998 [Restricted] (ICPSR 32603) Teplin, Linda A.