It’s official – cannabis use does not make you stupid. A 2012 study that found that cannabis lowers IQ has just been refuted by new research. What is notable is that the scientists involved in the original 2012 research has reversed her earlier findings.
Even when the research was originally published, the same journal published two different rebuttals that said socioeconomic status and/or personality traits better explain the correlation between childhood cannabis use and lower IQs.
See the original article at The Extract