http://slatestarcodex.com/2017/10/25/against-rat-park/ http://slatestarcodex.com/2017/10/25/against-rat-park/ has links, e.g.: http://sci-hub.io/10.2466/pr0.19

http://slatestarcodex.com/2017/10/25/against-rat-park/ http://slatestarcodex.com/2017/10/25/against-rat-park/ has links, e.g.: http://sci-hub.io/10.2466/pr0.1996.78.2.391 http://sci-hub.io/10.2466/pr0.1996.78.2.391 https://www.ncbi.nlm.nih.gov/pubmed/2616610 https://www.ncbi.nlm.nih.gov/pubmed/2616610 But there are other studies linked that seem to confirm it. https://www.ncbi.nlm.nih.gov/pubmed/3696469 https://www.ncbi.nlm.nih.gov/pubmed/3696469 https://www.ncbi.nlm.nih.gov/pubmed/18463628 https://www.ncbi.nlm.nih.gov/pubmed/18463628 Not sure where that leaves us.