Which concept does Parsons use in his equilibrium model of social change to indicate the increasing complexity of social organization

In simple words, Differentiation relates to the growing sophistication of social structure in Parsons' equilibrium concept of social development. According to Parsons, civilization is constantly in a fundamental condition of equilibrium which is described as an equivalent balancing of conflicting impulses . Any abrupt societal change, on the other hand, throws this balance off.

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