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July 1979

Interpersonal Effects of MarijuanaA Model for the Study of Interpersonal Psychopharmacology

Arch Gen Psychiatry. 1979;36(7):781-785. doi:10.1001/archpsyc.1979.01780070059006

• The effect of marijuana on affective changes and interpersonal skills, including empathy, acceptance, warmth, and genuineness, was studied in 20 dyadic relationships in which the experimental subject smoked marijuana containing 6 mg of delta-9-tetrahydrocannabinol and a placebo in separate trials. Marijuana caused a relative decrease in the ratings of the interpersonal skills of the experimental subjects and decreased affective resonance between the experimental subjects and their partners.