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Related Experiment Videos

Multidimensional behavioral effects of marijuana.

T H Kelly1, R W Foltin, C S Emurian

  • 1Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD.

Progress in Neuro-Psychopharmacology & Biological Psychiatry
|January 1, 1990
PubMed
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This study found that smoked marijuana, with varying levels of tetrahydrocannabinol (THC), increased food consumption and errors on psychomotor tasks in healthy adults. Measuring multiple behaviors helps determine marijuana

Area of Science:

  • Psychopharmacology
  • Human Behavior Studies

Background:

  • Understanding the behavioral effects of cannabis is crucial.
  • Previous research has explored various aspects of marijuana's impact on human cognition and behavior.

Purpose of the Study:

  • To investigate the dose-dependent behavioral effects of smoked marijuana in healthy adult males.
  • To assess the sensitivity of different behavioral dimensions to marijuana administration.

Main Methods:

  • Fifteen healthy adult males with occasional marijuana use participated in residential studies.
  • Subjects smoked marijuana cigarettes with varying THC concentrations (0-2.7%) at scheduled times daily.
  • A within-subject design involved alternating placebo and active marijuana phases.

Main Results:

Related Experiment Videos

  • Active marijuana consumption led to increased food intake and psychomotor task errors.
  • Decreased tobacco-cigarette smoking and verbal interactions were observed.
  • No significant changes were noted in task performance rates, social interaction time, or cooperation.

Conclusions:

  • Behavioral dimensions exhibit differential sensitivity to the effects of smoked marijuana.
  • Simultaneous measurement of multiple behavioral dimensions is effective for determining marijuana dose potency.