Small-scale human societies range from foraging bands with a strong egalitarian ethos to more economically stratified agrarian and pastoral societies. We explain this variation in inequality using a dynamic model in which a population's long-run steady-state level of inequality depends on the...

Leadership studies concentrate on large-scale societies and organizations with formal hierarchies, large power differences, and diverse membership. Much less is known about leadership in small-scale, homogeneous, and relatively egalitarian societies in which humans have spent most of their...