Study: Tobacco, Not Marijuana Could Be The Big IQ Killer
Guy Bentley Smoking tobacco might negatively affect teen students’ grades more than marijuana use, according to a new study. Published in the Journal of Psychopharmacology, researchers examined 2,235 children, investigating their IQ and educational performance from ages 15 to 16. The sample was taken from the Avon Longitudinal Study of Parents and Children. The effects of marijuana…