when playing the trust game, if the participants were told that the other player was a student at their university, the participants put on a psychological attitude of belonging, inclusiveness and membership, and this speaks about the in-group dynamics. On the contrary, when playing the trust game, if the participants were told that the other player was a student from a rival university, the participants put on a psychological attitude of not identifying, or nonmembership. This tells about the out-group dynamics of the participants. For example, people may find it psychologically meaningful to view themselves according to their race, culture, gender or religion. It has been found that the psychological membership of social groups and categories is associated with a wide variety of what situation is prevalent.