Abstract
This study examined the effects of δ9-tetrahydrocannibinol (THC) on defensive, primary-process, and secondary-process language. Four male volunteers provided 5-minute monologues in three conditions: Round 1, placebo; Round 2, 15 mg THC; Round 3, recovery. THC was found to attenuate defensive language behavior (retractors, qualifiers, direct references) and to increase the use of secondary-process (intellectualizing) vocabulary.