2011 Volume 21 Issue 1 Pages 39-51
Social simulations are one of methods to investigate the feedback between individual’s decision-making and social dynamics. Here we will show the effect of decision-making, which previous studies have not dealt with, on social dynamics, taking our three studies using evolutionary simulation, which is one of social simulations based on the evolutionary game theory: (1) how our decision-making mechanism evolves, (2) if the mechanism of human specific decision-making results in the human specific social dynamics, and (3) what kinds of decisions we make under constraint on the particular social institution. For (1), we investigate what type of decision-making function of punishment evolves in the coevolution of cooperation level and punishment. For (2), we assume that each player has attitude and behavior, and that each player learns either attitude or behavior from their parents, adults and peers. Then we examine if the discrepancy between attitude and behavior results in the coexistence of various social norms. For (3), we analyze the condition that rotating savings and credit associations (ROSCAs) are sustainable, and the effect of decision-making in the peer selection rule on sustaining ROSCAs.
