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The subjective marijuana experience: great expectations

C Stark-Adamec, R E Adamec, R O Pihl

    The International Journal of the Addictions
    |October 1, 1981
    PubMed
    Summary
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    Participant expectations significantly influence marijuana and placebo effects. Prior experience with cannabis intoxication predicts the intensity and duration of drug responses in laboratory settings.

    Area of Science:

    • Psychopharmacology
    • Cannabis Research
    • Behavioral Science

    Background:

    • Participant expectations are often cited as explanations for variable responses to marijuana.
    • Previous research has not consistently measured these expectations in relation to observed effects.

    Purpose of the Study:

    • To investigate if marijuana effect expectancies can be measured.
    • To determine if measured expectancies correlate with observed effects of marijuana and placebo.

    Main Methods:

    • Twenty-four experienced male marijuana users participated.
    • Coltsfoot, placebo, and marijuana were administered.
    • Expectancy was measured using the Expectancy Questionnaire and compared to the High Questionnaire.

    Main Results:

    Related Experiment Videos

    • Expectancy significantly influenced the drug experience for both placebo and marijuana.
    • Prior frequency of specific effects positively correlated with their intensity and duration.
    • Learned components and social factors contribute to cannabis intoxication.

    Conclusions:

    • Expectancy is a quantifiable factor in the marijuana and placebo drug experience.
    • Individual history of cannabis use impacts laboratory-observed effects.
    • Cannabis intoxication involves learned behaviors and social dynamics.