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Download full textJohnston, Lloyd D.; O'Malley, Patrick M.; Bachman, Jerald G.; Schulenberg, John E. – National Institute on Drug Abuse (NIDA), 2009
Since the mid-1960s, when illicit drug use burgeoned in the normal youth population, substance use by American young people has proven to be a rapidly changing phenomenon. Smoking, drinking, and illicit drug use are leading causes of morbidity and mortality, both during adolescence as well as later in life. How vigorously the nation responds to…
Descriptors: Substance Abuse, Drug Use, Grade 12, Grade 10
Freund, David S.; Rock, Donald A. – 1992
The National Assessment of Educational Progress (NAEP) focuses on providing information on what demographic subgroups of America's students know and can do. Because the NAEP does not report for individual students, it could be classified by some students as a low-risk test. Consequently, some students may lack proper motivation for giving their…
Descriptors: Age Differences, Black Students, Cohort Analysis, Educational Assessment
