Over half of them did.
The study has been repeated with slightly different parameters by scientists and news outlets repeatedly and yielded similar results.
This, obviously, has deeply disturbing implications. Perhaps most dire among them is that there are still people who believe that a scientist will give you access to a murder button.
|Explains why this guy still has a job|
Okay you freaking kill joy, it's not really a murder button. Apparently, scientific ethics prohibit modern researchers from making the test subjects think they're murdering someone. Now they're only 150 imaginary volts while the test subject pleads for mercy, rather than 450. So they're only being fooled into believing that scientists have given them a torture button.
(Public service announcement: scientists will practically never give you a real torture button, meaning if someone in a white coat is trying to tell you otherwise, they're really only doing an experiment to find out how horrible a person you are. Or else they're not a real scientist, but a maniac in a lab coat and you actually are, in fact, torturing somebody).