Generating Anthropological and Archeological Hypotheses in Okinawa through Agent-Based Simulation
3.3 Diffusion of Pottery Styles
Vertical Transmission of Pottery Styles : In cases of polygamous marriages , even in only the vertical transmission of pottery styles , the proportion of immigrant-style pottery in the cases of rapid diffusion of agriculture ( e . g ., a wide [ five cells ] range of diffusion cells and an easy introduction rate [ 1 %]) is higher than that in the cases of slow diffusion of agriculture ( e . g ., a narrow [ one cell ] range of diffusion cells and a difficult introduction rate [ 0.1 %]) ( Figure 5 ). The reason is assumed to be that after the female immigrant population increased by polygamous marriage within immigrants in the earliest period , during the population explosion by diffusion of agriculture among native people , the immigrant-style pottery was widely diffused though marriage with many female immigrants . These results support the hypothesis that the speed of agricultural diffusion was rapid and agriculture was performed mainly by native people . The process of pottery diffusion in this case is that immigrant-style pottery had been held mostly by immigrants and had not been diffused among native people because of vertical transmission without horizontal transmission .
Figure 5 . Difference in the proportion of immigrant-style pottery depending on the speed of agricultural diffusion in the vertical transmission of pottery styles .
Vertical and Horizontal Transmission of Pottery Styles : In the case of polygamous marriage and slow speed of diffusion of pottery styles , the high diffusion proportion of immigrant-style pottery holders was shown
83