“…Expectation states theory is a family of models concerned with the formation of inequalities of individual behavior and interpersonal interaction in task-oriented groups (Balkwell, 1991;Berger, Conner & Fisek, 1974;Berger, Fisek, Norman & Zelditch Jr., 1977;Berger, Wagner & Zelditch Jr., 1985;Fisek, Berger & Norman, 1991;Fisek, Norman & Nelson-Kilger, 1992;Skvoretz, Webster & Whitmeyer, 1999;Wagner & Berger, 1993). Following Bales (1950), the initial emphasis of the theory was on an account of how inequalities of interpersonal influence emerge in status homogenous groups, where there are no differences among group members on certain socio-demographic characteristics; however, the theory was quickly extended to include an account of how the emergent inequalities of interpersonal influence in heterogeneous groups are shaped by members' socio-demographic characteristics.…”