Disruption in Performance Cohesion in Society's Institution; from Theory to Native Building Index

Disruption in cohesion of society's institutions is studied in evolutionism and Functionalism- especially in transition period's discussions- and sociology. The purpose of this article is presenting a suitable index in macro experimental studies in sociology for measuring the disruption in Iranian society's institutions in current condition and its validity. Systemic cohesion and balance in functionalist theories has conceptual ambiguities, so measuring and building index will have some problems. Therefore at the first of this article concept of cohesion in Parsons Sociology is criticized on the basis of social entropy theory and finally the concept of disruption cohesion is replaced by cohesion and a suitable building index is done.