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Recent rapid decrease in adolescents' perception that marijuana is harmful, but no concurrent increase in use.

Aaron L Sarvet1, Melanie M Wall2, Katherine M Keyes3

  • 1Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, NY, USA; New York State Psychiatric Institute, New York, NY, USA.

Drug and Alcohol Dependence
|March 19, 2018
PubMed
Summary

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This summary is machine-generated.

Adolescent marijuana use has not increased with declining risk perceptions, challenging traditional prediction methods. New prevention strategies are needed as marijuana legalization expands.

Area of Science:

  • Adolescent Health
  • Public Health Policy
  • Substance Use Research

Background:

  • National trends in adolescent marijuana risk perceptions traditionally predict use.
  • This study examines the validity of this prediction during rapid marijuana policy changes.

Purpose of the Study:

  • To test the validity of using adolescent marijuana risk perceptions as a predictor of marijuana use trends.
  • To analyze trends in risk perception and use among adolescents during policy shifts.

Main Methods:

  • Utilized two national surveys: Monitoring the Future (MTF) and National Survey on Drug Use and Health (NSDUH).
  • Analyzed trends in perceived risk of harm and regular marijuana use from 1991-2015 (MTF) and 2002-2014 (NSDUH).
  • Employed piecewise linear regression to assess changes in the relationship between risk perception and use.
Keywords:
AdolescentsEpidemiologyMarijuanaRisk perception

Related Experiment Videos

Main Results:

  • Between 1991-2006, risk perception and marijuana use trends aligned; afterward, they diverged sharply.
  • Regular marijuana use increased slightly, while perceived no risk of harm significantly increased among 12th-graders.
  • Similar divergences were observed across different grades and survey datasets, even after controlling for demographics.

Conclusions:

  • Recent decreases in adolescent marijuana risk perceptions have not been followed by increased use.
  • Policymakers should consider broader prevention strategies beyond solely targeting risk perceptions.
  • Continued monitoring of marijuana use predictors is crucial amidst state-level recreational marijuana legalization.