Current and former marijuana use: preliminary findings of a longitudinal study of effects on IQ in young adults (Kanadensisk studie om hur IQ i det långa loppet påverkas av cannabis, läs abstract) User berimbolo, in the Ents from the northlands subreddit, 20 Nov 2014
Current and former marijuana use: preliminary findings of a longitudinal study of effects on IQ in young adults (Decline in heavy users, gains in light and fomer users) User worldnewsbot, in the News From Around The World subreddit, 25 May 2014
Current and former marijuana use: preliminary findings of a longitudinal study of effects on IQ in young adults User firelight, in the Welcome to the neighborwood. subreddit, 25 May 2014
Longitudinal Marijuana study suggests occasional post users have IQ increase, but also that chronic pot use lowers IQ (x-post - r/science) User GeckoGadget, in the Psychonaut subreddit, 15 Mar 2013