Social stratification

Social stratification refers to a society's hierarchical categorization of its people into groups based on socioeconomic factors such as wealth, income, race, education, ethnicity, gender, occupation, social status, or derived power (social and political). It is a hierarchy within groups that ascribe them to different levels of privileges. As such, stratification is the relative social position of persons within a social group, category, geographic region, or social unit. The concept of social stratification (as well as the concept of social mobility) was introduced by a Russian-American sociologist Pitirim Sorokin in his book "Social Mobility" published in 1927. In modern Western societies, social stratification is defined in terms of three social classes: an upper class, a middle class, and a working class; in turn, each class can be subdivided into an upper-stratum, a middle-stratum, and a lower stratum. Moreover, a social stratum can be formed upon the bases of kinship, clan, tribe, or caste, or all four. The categorization of people by social stratum occurs most clearly in complex state-based, polycentric, or feudal societies, the latter being based upon socio-economic relations among classes of nobility and classes of peasants. Whether social stratification first appeared in hunter-gatherer, tribal, and band societies or whether it began with agriculture and large-scale means of social exchange remains a matter of debate in the social sciences. The structures of social stratification arise from inequalities of status among persons; therefore, the degree of social inequality determines a person's social stratum. Generally, the greater the social complexity of a society, the more social stratification exists, by way of social differentiation.