Abstract
It is generally thought that living things have desires for conformity as well as desires for differentiation, which make their preferences show trends. Recently, it was confirmed that there were trends in the preferences of how female birds chose their mates. We think trends in the preferences are related to desires for conformity and differentiation and the strength of desires among living species are genetically different from one and another. We describe the strength of desires among living species as being artificial agents of genes. In this paper, we simulate phenomena of fashion in female preferences for a mate by using an agent model that consists of imported conformity and differentiation as genes. In this experiment, we found that there were two kinds of periodic phenomena of fashion and reported the influence of conformity and differentiation on the transition of female preferences.
