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Wave IV data collection currently underway

Main study field work for Add Health Wave IV began on schedule in January 2008 and will continue through early fall.

U.S. News & World Report covers new study by Add Health investigator Guang Guo

The study on genetic propensities, environmental influences and delinquency uses data from Add Health.

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Add Health

AH_map_homepage.jpgThe National Longitudinal Study of Adolescent Health (Add Health) is a longitudinal study of a nationally representative sample of adolescents in grades 7-12 in the United States during the 1994-95 school year. The Add Health cohort has been followed into young adulthood with four in-home interviews, the most recent in 2008, when the sample was aged 24-32. Add Health combines longitudinal survey data on respondents’ social, economic, psychological and physical well-being with contextual data on the family, neighborhood, community, school, friendships, peer groups, and romantic relationships, providing unique opportunities to study how social environments and behaviors in adolescence are linked to health and achievement outcomes in young adulthood. The fourth wave of interviews expanded the collection of biological data in Add Health to understand the social, behavioral, and biological linkages in health trajectories as the Add Health cohort ages through adulthood.