The effects of marijauna on verbalization and thought processes.

The verbal output of subjects in response to 10 cards of the TAT was obtained on two occasions and under placebo, marijauna low and high conditions. The themes were independently rated on 13 variables reflecting thought processes, emotional tone, control aggression, and sexual content by two judges. Significant differential dosage differences were obtained in terms of disruption of cognitive processes, and emotional tone. Moreover, a multivariate analysis yielded a significant discrimination among the three experimental conditions.