His work focuses on effects of HIV and drug use , particularly alcohol , medical marijuana , and methamphetamine .
Grant is the founding Editor of the Journal of the International Neuropsychological Society and founding co-editor of the journal AIDS and Behavior .
Grant 's work focuses on effects of HIV and drug use , particularly alcohol , medical marijuana , and methamphetamine .
Grant is the founding Editor of the Journal of the International Neuropsychological Society and founding co-editor of the journal AIDS and Behavior .