Effects of Marijuana Use on Divergent Thinking

This research sought to evaluate the effect of marijuana use on creativity as defined by the term divergent thinking. Another objective was to verify if there was a difference in the creativity of regular users (60 participants) and that of novice users of marijuana (60 participants) under 3 experimental conditions: without marijuana, with placebo, and with marijuana. The 4 divergent thinking factors (fluency, flexibility, originality, and elaboration) were measured by the Torrance Tests of Creative Thinking (Form A, Figural scale). The results showed that the use of marijuana had no positive effects on divergent thinking (creativity) in novice users and reduced it in regular users.