In '84 I had a college class in experimental psychology, and the culmination of that was to perform our own experiment, which had to clear the IRB. Mine involve

In '84 I had a college class in experimental psychology, and the culmination of that was to perform our own experiment, which had to clear the IRB. Mine involved measuring the student-subject's galvanic skin response and showing them photos of art. To calibrate that device the protocol was for the experimenter to slap their hands together a few feet away from the subject. That was too much for the IRB even 40 years ago. They did not allow the slap. Too traumatic I guess. It didn't really make a difference because it was a toy study for a class. But that was a great lesson in IRBs.