FRANÇAIS :
Cette enquête est un suivi à long terme des adolescents américains lycéens, de 13, 15 et 17 ans, concernant leur usage de drogues licites et illicites. Elle montre aussi leurs niveaux de perceptions des risques et leur opinion sur la consommation des produits.

ENGLISH:
Monitoring the Future is a long-term study of American adolescents, college students, and adult through age 40. It is conducted by the University of Michigan's Institute for Social Research and is supported under a series of investigator-initiated, competing research grants from the National Institute on Drug Abuse. This volume presents an overview of the key findings from the 2000 survey of 8th, 10th, and 12th grade students, with a particular emphasis on recent trends in the use of the various licit and illicit drugs covered by the study. It also shows trends in the levels of perceived risk and personal disapproval associated with each drug, which this study has shown to be particularly important in explaining trends in use. The first section of findings presents trends in the overall proportions of students at each grade level reporting illicit drug use of any kind. A separate section is then presented for each class of drugs. These sections contain graphs showing trends in past-year use and (when available) trends in perceived risk, disapproval, and perceived availability of the drug. The statistics underlying the trend lines contained in these graphs are given in the tables at the end of this report, covering the period 1991-2000. These tables also contain the data on lifetime prevalence, 30-day prevalence, and (for selected drugs) daily prevalence. Furthermore the tables indicate for each prevalence period which 1999-2000 one-year changes are statistically significant. (Extract of the publication)