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@CStamp @mekkaokereke Yeah, statistically not huge, and psychology-study games don't always translate well to the real world. But there are lots of other related studies if you really want to dig into it. This is just the one I remember hearing about :-).
For me, the big thing isn't so much the hormone effect, but the effect of people's _ideas_ of the hormones, which in this case were opposite to the actual ones.
@mekkaokereke The ones who got t. and not told what it was played somewhat more fairly than the control group, which is interesting. But much more interesting was that the ones who were _told_ they were given testosterone played much more selfishly, whether it was placebo or not. The conclusion was that people's _idea_ of what hormones do completely overrides their actual effects on behavior.
@mekkaokereke Reminds me of a study I read about many years ago where participants had to play a typical psychology-study game where had to make a choice to be more fair or more selfish. Control group got placebo. The three experimental groups got:
* placebo, but told it was testosterone
* testosterone, but not told what it was
* testosterone, and told it was testosterone
