Maybe the Milgram experiment was a one-off fluke.
http://en.wikipedia.org/wiki/Milgram_experiment#Replications_and_variations —
In Obedience to Authority: An Experimental View (1974), Milgram describes nineteen variations of his experiment [...]
(emphasis added)
http://en.wikipedia.org/wiki/Milgram_experiment#Replications_and_variations —
(emphasis added)