Hamburg B A, Kraemer H C, Jahnke W
Am J Psychiatry. 1975 Nov;132(11):1155-63. doi: 10.1176/ajp.132.11.1155.
The authors studied drug use in a representative sample of suburban junior and senior high school students. They found high levels of drug use overall and a substantial amount of drug involvement among junior high school students. They also found that drugs were used in clusters, that there was a distinctive age-related pattern of drug use, and that the progressive-step therory of drug use was not confirmed. A number of behavioral and attitudinal variables correlated with a tendency toward a high level of drug use. The implications of these findings include the need for targeted drug education and prevention programs and a differentiated approach to the study of drug use among adolescents.