Project on Human Development in Chicago Neighborhoods (PHDCN): Perceptions of Drug Risk, Wave 3, 2000-2002 Earls, Felton J. Brooks-Gunn, Jeanne Raudenbush, Stephen W. Sampson, Robert J. adolescents alcohol childhood cocaine crack cocaine drug use drugs hallucinogens heroin inhalants marijuana smoking social behavior steroids tobacco use DSDR.IV NAHDAP.I NACJD.VII DSDR.VIII ICPSR.XVII PHDCN.IV DSDR.VI The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One such measure was the Perceptions of Drug Risk instrument. This instrument obtained information about the perceived harm in using substances, the difficulty of obtaining substances, and the experience of being approached to buy drugs. It was administered to Cohorts 6, 9, and 12. It is closely related to PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): PERCEPTIONS OF DRUG RISK, WAVE 2, 1997-2000 (ICPSR 13643). 2007-02-06 survey data 13728 10.3886/ICPSR13728.v1 Chicago Illinois United States 2000--2002 ICPSR metadata records are licensed under a Creative Commons Attribution-Noncommercial 3.0 United States License (http://creativecommons.org/licenses/by-nc/3.0/us/).