I took part in this experiment. It was about 12-15 years ago. The test was administered by the department of Economics of the University. They put flyers aroun

I took part in this experiment. It was about 12-15 years ago. The test was administered by the department of Economics of the University. They put flyers around the campus for volunteers, who would then get to keep any money they earned. Such experiments attracted students that wanted to make some money. Most students did not bother to participate . The screenshots in the supporting material match what I saw on the computer screen. We were given the instructions and had some time to digest the rules. I calculated that the best reward would come if all were cooperating and I hoped that everyone else would figure it out. In that way, our group of four anonymous participants would get away with some extra money. I was willing to cooperate, although I come originally from a country that did abysmally bad in this test. During the first two rounds, I would put all funds into the pool. The rest of the group did not pick up the signal, did not put any funds or they put just a little. The game would work if everyone put all they funds in the pool, and in that case we would earn even more from the "bank". On the third round, I did not put any funds in the pool. I noticed though that some of the others players would persist in putting some small funds in the pool, as if they did not figure out what was going on. Before reading this post, I thought that the experiment I took was rigged and you were playing against three computer players who on purpose were not cooperating. During the next set of rounds with punishments, I did not contribute and neither did most of the others. There were some random punishments by the others which did not make sense. Looking back, I can feel the inexperience of an undergraduate who could not understand that there could be a strategy that is beneficial to all. Some comments said that communism can make people less willing to cooperate. I don't think so. The problem is the cultural attitude of the society, which transcends communism.