Study Search Results Your query returned 3 results. Series results are grouped under the most relevant study. You can ungroup series results. 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. Monitoring the Future: A Continuing Study of American Youth (12th-Grade Survey), 2012 (ICPSR 34861) Johnston, Lloyd D.; Bachman, Jerald G.; O'Malley, Patrick M.; et al. 21 more results in Monitoring the Future (MTF) Series 2. 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. 3. New Hope Project: Income and Employment Effects on Children and Families, 1994-2003 [Restricted Use] (ICPSR 30282) Huston, Aletha; Miller, Cynthia; Duncan, Greg; et al.