 They were subsequently developed by Schelling, Axelrod, and Granovetter to model collective behavior.Schelling used a special case of Sakoda's model to describe the dynamics of segregation motivated by individual interactions in America (JMS vol 1 #2, 1971) by constructing two simulation models.Schelling demonstrated that “there is no simple correspondence of individual incentive to collective results,” and that the dynamics of movement influenced patterns of segregation.