Hulk smash puny placebo effect!
from Boing Boing, posted over 3 years ago
Women who thought they were getting a dose of testosterone behaved more aggressively and selfishly--whether or not they'd really been given the hormone. Women who got testosterone and didn't know it were actually more altruistic. The researchers suspect macho testosterone lore created a "license to misbehave" in the women who thought they were under its influence.