Reference » Longitud. studies

National Longitudinal Study of Adolescent Health

The US National Longitudinal Study of Adolescent Health, known as the Add Health study, began in the 1994-1995 school year, drawing in schoolchildren between the ages of 12 and 18. They have been interviewed four times since, most recently in 2008. Data are being collected on their social, economic, psychosocial and physical well-being, as well as about their families, neighborhood, community, school, friends and relationships. In the fourth wave of collection biological information was also collected to examine the influence of genetics.