Simulation Experiments of Periodic Phenomena of Fashion on Artificial Society with Learning Process

There are periodic phenomena of fashions that animation and stagnation of a style repeated themselves such as skirt booms or new religion booms in the past. There is the possibility that the phenomenon results from a variation of a social temper. So, the author has built an artificial society by adding to the Ishii's model the process of learning and evolution in the rule to adopt or reject a style, and examined whether the autonomous variation of the temper can emerge. As results, the author shows that the periodic phenomena could emerge in the artificial society and that the formation and disruption of cluster of those who adopt a style sensitively turn the society toward the animation and stagnation as a driving force.