Dr. Hart conducts research on several drugs of abuse with concentrations on cannabis and methamphetamine. In his studies he uses human subjects to determine many critical aspects of the effects of recreational and abused drugs, including acute and lasting toxicities as well as dependence. A major focus of Dr. Hart’s research is to understand behavioural, physiological, and subjective effects of psychoactive drugs in experienced users. Specifically, he has developed a laboratory model of shift work to characterize its effect on drug users, and has developed an assessment tool for the measurement of cognitive functioning during intoxication, with particular emphasis on cannabis users. He is the author or co-author of dozens of peer-reviewed scientific articles in the area of substance abuse and co-author of the textbook Drugs, Society, and Human Behavior. Dr. Hart was recently elected Fellow of the American Psychological Association for his outstanding contribution to the field of psychology, specifically psychopharmacology and substance abuse.