The social status variables underlying social stratification are based in social perceptions and
attitudes about various characteristics of persons and peoples. While many such variables cut across time and place, the relative
weight placed on each variable and specific combinations of these variables will differ from place to place over time. One task of research is to identify accurate
mathematical models that explain how these many variables combine to produce stratification in a given society. Grusky (2011) provides a good overview of the historical development of sociological theories of social stratification and a summary of contemporary theories and research in this field. While many of the variables that contribute to an understanding of social stratification have long been identified, models of these variables and their role in constituting social stratification are still an active topic of theory and research. In general, sociologists recognize that there are no "pure" economic variables, as social factors are integral to economic value. However, the variables posited to affect social stratification can be loosely divided into economic and other social factors.
Economic Strictly
quantitative economic variables are more useful to
describing social stratification than
explaining how social stratification is constituted or maintained.
Income is the most common variable used to describe stratification and associated
economic inequality in a society. Wealth variables can also more vividly illustrate salient variations in the well-being of groups in stratified societies.
Gross Domestic Product (GDP), especially
per capita GDP, is sometimes used to describe economic inequality and stratification at the
international or global level.
Social Social variables, both quantitative and
qualitative, typically provide the most explanatory power in
causal research regarding social stratification, either as
independent variables or as
intervening variables. Three important social variables include
gender,
race, and
ethnicity, which, at the least, have an intervening effect on social status and stratification in most places throughout the world. Additional variables include those that describe other ascribed and achieved characteristics such as
occupation and
skill levels,
age,
education level, education level of parents, and
geographic area. Some of these variables may have both causal and intervening effects on social status and stratification. For example, absolute age may cause a low income if one is too young or too old to perform productive work. The social perception of age and its role in the workplace, which may lead to
ageism, typically has an intervening effect on
employment and income. Social scientists are sometimes interested in quantifying the degree of
economic stratification between different social categories, such as men and women, or workers with different levels of education. An index of stratification has been recently proposed by Zhou for this purpose.
Gender Gender is one of the most pervasive and prevalent social characteristics which people use to make social distinctions between individuals. Gender distinctions are found in economic-, kinship- and caste-based stratification systems.
Social role expectations often form along sex and gender lines. Entire societies may be classified by social scientists according to the
rights and
privileges afforded to men or women, especially those associated with ownership and inheritance of
property. In
patriarchal societies, such rights and privileges are
normatively granted to men over women; in
matriarchal societies, the opposite holds true. Sex- and gender-based
division of labor is historically found in the annals of most societies and such divisions increased with the advent of
industrialization. Sex-based
wage discrimination exists in some societies such that men, typically, receive higher wages than women for the same type of work. Other differences in employment between men and women lead to an overall gender-based pay-gap in many societies, where women as a category earn less than men due to the types of jobs which women are offered and take, as well as to differences in the number of hours worked by women. These and other gender-related values affect the distribution of income, wealth, and property in a given social order.
Race Racism consists of both
prejudice and
discrimination based in social perceptions of observable biological differences between peoples. It often takes the form of
social actions, practices or beliefs, or
political systems in which different races are perceived to be ranked as inherently superior or inferior to each other, based on presumed shared inheritable traits, abilities, or qualities. In a given society, those who share racial characteristics socially perceived as undesirable are typically under-represented in positions of social power, i.e., they become a
minority category in that society. Minority members in such a society are often subjected to discriminatory actions resulting from majority policies, including
assimilation,
exclusion,
oppression,
expulsion, and
extermination. Overt racism usually feeds directly into a stratification system through its effect on social status. For example, members associated with a particular race may be assigned a
slave status, a form of oppression in which the majority refuses to grant basic
rights to a minority that are granted to other members of the society. More
covert racism, such as that which many scholars posit is practiced in more contemporary societies, is socially hidden and less easily detectable. Covert racism often feeds into stratification systems as an intervening variable affecting income, educational opportunities, and housing. Both overt and covert racism can take the form of
structural inequality in a society in which
racism has become institutionalized.
Ethnicity Ethnic prejudice and discrimination operate much the same as do racial prejudice and discrimination in society. In fact, only recently have scholars begun to differentiate race and ethnicity; historically, the two were considered to be identical or closely related. With the scientific development of
genetics and the
human genome as fields of study, most scholars now recognize that
race is socially defined on the basis of biologically determined characteristics that can be observed within a society while ethnicity is defined on the basis of
culturally learned behavior. Ethnic identification can include shared cultural heritage such as
language and
dialect,
symbolic systems,
religion,
mythology and
cuisine. As with race, ethnic categories of persons may be socially defined as minority
categories whose members are under-represented in positions of social power. As such, ethnic categories of persons can be subject to the same types of majority policies. Whether ethnicity feeds into a stratification system as a direct, causal factor or as an intervening variable may depend on the level of ethnographic centrism within each of the various ethnic populations in a society, the amount of conflict over scarce resources, and the relative social power held within each ethnic category.
Global stratification Globalizing forces lead to rapid international integration arising from the interchange of
world views, products, ideas, and other aspects of culture. Advances in
transportation and
telecommunications infrastructure, including the rise of the
telegraph and its modern representation the
Internet, are major factors in globalization, generating further
interdependence of economic and cultural activities. Like a stratified class system within a nation, looking at the
world economy one can see class positions in the unequal distribution of
capital and other resources between nations. Rather than having separate national economies, nations are considered as participating in this world economy. The world economy manifests a global
division of labor with three overarching classes:
core countries,
semi-periphery countries and
periphery countries, according to World-systems and Dependency theories. Core nations primarily own and control the major means of production in the world and perform the higher-level production tasks and provide international financial services. Periphery nations own very little of the world's
means of production (even when factories are located in periphery nations) and provide low to non-skilled labor. Semiperipheral nations are midway between the core and periphery. They tend to be countries moving towards industrialization and more diversified economies. Core nations receive the greatest share of surplus production, and periphery nations receive the least. Furthermore, core nations are usually able to purchase raw materials and other goods from noncore nations at low prices, while demanding higher prices for their exports to noncore nations. A
global workforce employed through a system of
global labor arbitrage ensures that companies in core countries can utilize the cheapest semi-and non-skilled labor for production. Today we have the means to gather and analyze data from economies across the globe. Although many societies worldwide have made great strides toward more equality between differing geographic regions, in terms of the
standard of living and
life chances afforded to their peoples, we still find large gaps between the wealthiest and the poorest within a nation and between the wealthiest and poorest nations of the world. A January 2014
Oxfam report indicates that the 85 wealthiest individuals in the world have a combined wealth equal to that of the bottom 50% of the world's population, or about 3.5 billion people. By contrast, for 2012, the
World Bank reports that 21 percent of people worldwide, around 1.5 billion, live in extreme poverty, at or below $1.25 a day. Zygmunt Bauman has provocatively observed that the rise of the rich is linked to their capacity to lead highly mobile lives: "Mobility climbs to the rank of the uppermost among coveted values—and the freedom to move, perpetually a scarce and unequally distributed commodity, fast becomes the main stratifying factor of our late modern or postmodern time."
Digital stratification and digital capital In contemporary sociology, social stratification is increasingly analyzed through the lens of digital inequality. Moving beyond the concept of a simple "digital divide," research by scholars such as Massimo Ragnedda and Maria Laura Ruiu has integrated Pierre Bourdieu's theory of capital into the digital realm. This perspective introduces "digital capital" as a specific form of capital that consists of digital resources and skills. Digital capital acts as a bridge between social origin and the ability to convert online activities into social, economic, or cultural gains, thereby reinforcing existing social stratifications. This "third digital divide" focuses not only on access or skills but on the unequal life chances and outcomes produced by digital engagement. ==See also==