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Related Experiment Videos

Acute marijuana effects on social conversation.

S T Higgins, M L Stitzer

    Psychopharmacology
    |January 1, 1986
    PubMed
    Summary

    This study found that smoking marijuana with THC significantly reduced speech quantity during social conversations. These acute effects mirror those seen with chronic marijuana use, unlike other drugs of abuse.

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    Area of Science:

    • Psychopharmacology
    • Neuroscience
    • Social Interaction Studies

    Background:

    • Previous research suggests various drugs of abuse can increase verbal interaction.
    • Understanding the impact of tetrahydrocannabinol (THC) on social communication is crucial.

    Purpose of the Study:

    • To investigate the acute effects of smoked marijuana with varying THC concentrations on social conversation.
    • To compare acute effects with previously reported chronic marijuana use impacts on speech.

    Main Methods:

    • Seven moderate marijuana users participated in controlled laboratory sessions.
    • Participants smoked marijuana cigarettes with 0%, 1.01%, 1.84%, or 2.84% THC.
    • Speech quantity was continuously recorded during conversations with placebo-smoking partners.

    Main Results:

    • Active marijuana significantly decreased speech quantity in a dose-dependent manner.
    • Heart rate, self-reported 'high,' and sedation increased with THC exposure.
    • Conversation partners showed no significant changes in speech or self-reported effects.

    Conclusions:

    • Acute marijuana use, particularly THC, suppresses social conversation quantity.
    • This contrasts with the typical effect of other drugs of abuse, which often enhance verbal interaction.
    • Findings suggest marijuana's unique impact on social communication, even with short-term use.

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