Rat park is an interesting idea that is certainly compelling but in no way concrete. Follow up studies have failed to replicate the results, which doesn't mean

Rat park is an interesting idea that is certainly compelling but in no way concrete. Follow up studies have failed to replicate the results, which doesn't mean it's wrong, but does mean it warrants a lot more work before deciding that environment/isolation is the primary driver of drug addiction in rats, much less humans. Previously discussed on HN: https://news.ycombinator.com/item?id=7742950 https://news.ycombinator.com/item?id=7742950 Follow up study failing to reproduce results: http://www.ncbi.nlm.nih.gov/pubmed/9148292?dopt=Abstract http://www.ncbi.nlm.nih.gov/pubmed/9148292?dopt=Abstract