Elucidating the acute effects of medically prescribed oral and vaporised delta‐9‐tetrahydrocannabinol on cognitive functions important for driving

Abstract Introduction: This program of research investigated the acute effects of orally ingested (Study 1) and vaporised (Study 2) cannabis containing delta‐9‐tetrahydrocannabinol (THC) on cognitive functions relevant for driving in two samples of medicinal cannabis patients (Study 1 N = 41 oral users; Study 2 N = 37 flower users). Method: Participants completed counterbalanced baseline (no cannabis) and cannabis consumption (post‐cannabis) appointments scheduled approximately 1 week apart. During each session, participants were administered a cognitive battery assessing information processing speed,