Lloyd Johnston and Jerry Bachman initiated this study to look at adolescent drug use and attitudes among American 12th graders, and in 1991 expanded it to include 8th and 10th grade students. The annual survey of some 50,000 students has provided key information about trends in drinking, smoking, and drug use; changing attitudes and values among youth; and impacts of tobacco marketing strategies, helping to guide the nation’s alcohol and drug prevention strategies.
