Researchers modeled four strategies people use to guide their social interactions in large groups: cooperator, shunner, reciprocator, and defector.

Credit: Zina Deretsky, National Science Foundation

You can play the game developed in this research. Start the game by choosing an option in the collective action game; you will then be asked to choose an option in the mutual aid game. Your choices will determine what your overall strategy is.

Credit: Zina Deretsky, National Science Foundation