Abstract: | A number of studies from experimental psychology suggest the existence of information-processing constraints that place limits on the number of people with which an individual may simultaneously interact. The existence of such constraints means that increases in the size of a human group will push that population toward “scalar thresholds,” at which point a transformation of the social order must take place to reorganize patterns of group interaction. The model developed here incorporates ethnographic data into the scalar theory of social change in an attempt to refine the precision with which scalar thresholds may be predicted. This scalar model contributes to an understanding of social change in small- to midsized sedentary populations and provides insight into processes by which social differentiation can emerge in these societies. |