Social mobility refers to the movement of individuals, families or groups from one position to another within a system of social stratification. Because every stratified society distributes rewards, prestige and power unequally across positions, the question of who moves — how far, how often, and by what routes — is inseparable from the question of how inequality is reproduced. The concept was given systematic form by Pitirim Sorokin in Social Mobility (1927), who insisted that no society is either perfectly rigid or perfectly fluid; mobility is always present, but its rate, direction and channels vary.
Mobility is thus not a measure of how much inequality a society contains but of how permeable its inequalities are. A society can combine wide gaps between positions with considerable movement between them, or narrow gaps with almost no movement at all. Keeping these two questions apart — the shape of the hierarchy and the traffic within it — is the first analytical discipline the concept demands.
Types of mobility
Vertical mobility involves a change of rank, either upward or downward; horizontal mobility is movement between positions of roughly equal standing, such as a teacher changing schools or a peasant migrating to another village. Intergenerational mobility compares a person's position with that of their parents and is the standard test of openness; intragenerational (or career) mobility traces movement across a single working life.
A further distinction concerns causation. Structural mobility results from transformations in the occupational structure itself — industrialisation, the expansion of clerical and service work, the contraction of agriculture — which create room at the top irrespective of individual merit. Individual or exchange mobility occurs when people trade places within an unchanged structure, so that one person's ascent requires another's descent. Much of the twentieth century's celebrated upward movement was structural, a fact easily mistaken for growing equality of opportunity.
Open and closed systems
Systems of stratification are conventionally ranged between the open, where position is achieved and status is broadly earned, and the closed, where position is ascribed at birth and sanctioned by custom, law or ritual. Class systems approximate the first, caste and estate systems the second — although the contrast is a matter of degree, since ascription persists in the most fluid societies and mobility occurs in the most rigid ones.
Ralph Turner (1960) added an important refinement by comparing the norms that govern mobility. Under sponsored mobility, characteristic of the English grammar-school system of his day, elites select recruits early and induct them; under contest mobility, associated with the American high school, the prize is held open to prolonged competition. Both may produce similar rates of movement while distributing very different experiences of legitimacy and failure.
Mobility in a caste society
Caste has long been treated as the paradigm of closure, yet Indian sociology has documented several routes of movement. M. N. Srinivas showed through the concept of sanskritisation that a lower caste could raise its ritual standing by adopting the practices of a higher one, though this was collective and positional mobility within the hierarchy rather than a challenge to it. Land, political numbers and the emergence of the dominant caste offered secular routes to power that ritual rank alone could not confer.
Since Independence, the decisive channels have been reservation in education, employment and legislatures, the expansion of schooling, urban migration and the growth of non-agricultural work. These have produced a substantial mobile stratum among Scheduled Castes and Other Backward Classes, concentrated in the public sector and in politics. Yet studies of urban labour markets and of discrimination in hiring show how far movement remains channelled by caste — advantage transmitted through networks, language and cultural capital in the manner Bourdieu described.
Measurement and its limits
Mobility is studied through outflow and inflow tables comparing origin and destination, and through path models of the kind Blau and Duncan (1967) pioneered. Such research faces persistent difficulties: occupational categories obscure differences of income and security; women's mobility is often misread through husbands' or fathers' occupations; and the informal sector, which employs the overwhelming majority of Indian workers, resists tidy classification.
The deeper caution is analytical. High individual mobility can leave a structure of inequality wholly undisturbed, and may even legitimise it by suggesting that those at the bottom deserve to be there. Mobility is therefore no substitute for redistribution — a point that matters when policy treats a handful of visible ascents as proof that opportunity has been equalised.
For the UPSC answer
Open your answer by separating the two questions mobility raises — the degree of inequality and the openness of the system — and use Sorokin for the point that no society is wholly closed. Always classify before you illustrate: vertical or horizontal, inter- or intragenerational, and above all structural or individual, since examiners reward the observation that post-Independence Indian mobility owed much to occupational restructuring and reservation rather than to a loosening of caste itself. Bring in sanskritisation and dominant caste for positional mobility within the hierarchy, and Turner's sponsored-versus-contest distinction if the question turns on education. Close with the limitation: mobility redistributes persons, not positions, and can legitimise the very hierarchy it appears to soften.
References & further reading
- Sorokin, P. A. (1927). Social Mobility. Harper and Brothers.
- Turner, R. H. (1960). Sponsored and Contest Mobility and the School System. American Sociological Review, 25(6).
- Lipset, S. M. and Bendix, R. (1959). Social Mobility in Industrial Society. University of California Press.
- Blau, P. M. and Duncan, O. D. (1967). The American Occupational Structure. Wiley.
- Srinivas, M. N. (1966). Social Change in Modern India. University of California Press.
- Goldthorpe, J. H. (1980). Social Mobility and Class Structure in Modern Britain. Clarendon Press.