I've been a subject for a few experimental economics experiments (back when $30 for 2 hours seemed worth it), and I always played rationally (e.g. accept any offer in a single-trial ultimatum), but when I'm on the bum end of games, it makes me feel yucky and I never want to be a test subject again. There was this one where the best strategy was clear to everyone, and player type A got 0.75 average per round, and player type B got 0.25 average, and I was so pissed about being a B I wanted to walk out of the experiment just to fuck it up.

What are really fun are the trading games where they try to see how efficient the (fake) market is or how fast you react to new information or conditions; second most fun are games where the faster you go, the more $ you get. It feels so good to see your ID at the top of the payout list.

The other reason I stopped enjoying these experiments is that the equilibria / optimal strategies were usually so *obvious* that soon everyone followed them and playing wasn't interesting. I could just see the paper the grad student was planning to write based on the experiment, and I imagined them smugly concluding that their findings were novel and significant when they were actually really boring and irrelevant. Plus, I never understood why you could write papers that were supposed to represent the behavior of humans as a whole, when your sample set was a bunch of IQ>130 students, most of whom knew at least a bit of game theory.