Rat Park
I'm just gonna be lazy and link to what I wrote the last time the Rat Park page came up on HN:https://news.ycombinator.com/item?id=7743089It comes up a lot, maybe because the result is kind of positive and aligns well with HN's crowds drug liberal views?The RP experiment wrt morphine addiction in mice has not been replicated. Also, afaik, Bruce Alexander had a hypothesis about drug addiction, designed an experiment to prove his hypothesis. Performed the experiment, measured the results and found that they confirmed his hypothesis. It's not a good way to do research. The results of the Stanford Prison Experiment and the Milgram experiments should be discredited for the same reason. Because their results were tainted by their designer.Extraordinary claims requires extraordinary proofs. That mice wouldn't become addicted to morphine is most certainly an extraordinary claim.