Abstract
Social class is one of the concepts that is very important for social scientists and at the same time this concept has been very controversial. Scholars in this field do not agree much on the definition of class, field and its application, structure and related theories, and have analyzed it from different perspectives, sometimes only from an economic, sometimes political and sometimes in addition, the economic and political dimensions of the social and cultural dimensions have been studied, and others discuss the disappearance of class. The kind of view of thinkers on this concept can create different procedures in the field of issues and concepts of stratification, social class and middle class. This article examines and compares the views of social and middle class thinkers in Iran with meta-analysis method and compares their views in the fields of social class concept, social class structure, typological features structure and middle class function. The study courses of the observers on the social class are before Qajar, Qajar, Pahlavi and the Islamic Revolution of Iran. The results show that the most agreement on the concept of class is related to the criteria: 1. Occupational, 2. Economic and common opportunities Life is equal 3. Power and ownership and 4. Understanding historical conditions. These theorists also have commonalities and differences in the fields of class structure, characteristics, typology and functions of social and middle class.