Independent people show more trust to strangers than interdependent people. On the other hand, interdependent people show more trust and dependence within their in-groups than independent people. Communal sharing: women of acora sharing a lunch. Egoist: want people to share with them, but don"t expect to share with others. Saint: share with others, but don"t expect others to share with them. Bourgeois: don"t share with others and don"t expect others to share with them. Kameda, takezawa, and hastie (2005) used evolutionary game theory models to simulate survival rates of different strategies over generations. Communal sharing was the most stable strategy and ended up most dominant over time. It suggests that people prefer egalitarian strategies when resources are more uncertain. Fisk (1991, 1992) argued that all relationships are based on one or more of the 4 basic elements of sociality: communal sharing, authority ranking, equality matching, market pricing.