It is also interesting to note that the paper cites only 3 "NIH grants", but the lead author works for the "Duke Transdisciplinary Prevention Research Center, C

It is also interesting to note that the paper cites only 3 "NIH grants", but the lead author works for the "Duke Transdisciplinary Prevention Research Center, Center for Child and Family Policy," which doesn't sound very objective. Hmm, let's dig further. The home page of the TPRC lists a single funder: the NDIA. https://childandfamilypolicy.duke.edu/project/transdisciplinary-prevention-research-center-tprc/ https://childandfamilypolicy.duke.edu/project/transdisciplin... That would be the National Institute on Drug Abuse, an institution which has a pre-established position on marijuana and other drugs, and stands to gain financially the more problems that are perceived with recreational drug use. The following government piece on drugabuse.org does not mention the serious criticisms, despite heavily quoting from the journal in which they were published 6 months prior. Since it streches credulity to think they didn't know about the problems raised, the logical conclusion is that the authors felt their piece would be stronger without mentioning them (versus offering any counter-rebuttal). https://www.drugabuse.gov/news-events/nida-notes/2013/08/early-onset-regular-cannabis-use-linked-to-iq-decline https://www.drugabuse.gov/news-events/nida-notes/2013/08/ear...