Study Search Results Your query returned 3 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. Helping Young Smokers Quit: Identifying Best Practices for Tobacco Cessation, Phase II National Program Evaluation, 2003-2006 (ICPSR 33161) Mermelstein, Robin J.; Curry, Susan J. 2. Project on Human Development in Chicago Neighborhoods (PHDCN): Addendum (Primary Caregiver), Wave 3, 2000-2002 (ICPSR 13670) Earls, Felton J.; Brooks-Gunn, Jeanne; Raudenbush, Stephen W.; et al. 156 more results in Project on Human Development in Chicago Neighborhoods (PHDCN) Series 3. Welfare, Children, and Families: A Three-City Study (ICPSR 4701) Angel, Ronald; Burton, Linda; Chase-Lansdale, P. Lindsay; et al.