Where does human capital collide?

The stock of skills, knowledge, and health a person acquires through schooling, training, and experience, which raises their productivity and earnings, so that education can be analysed as an investment with costs and a rate of return. Becker's 1962 Investment in Human Capital: A Theoretical Analysis and his book Human Capital, first published in 1964, built the theory: a person or a firm spends now, in tuition, forgone earnings, or on-the-job training, to raise a future stream of earnings, and Becker's distinction between general training, which the worker pays for and carries anywhere, and firm-specific training, whose cost and return the firm shares, follows from who can capture the gain. Mincer's earnings function then tied the log wage to years of schooling and experience, giving the theory its empirical form. This is the origin meaning: human capital as capital, an investable stock embodied in a person that pays a return like any other asset.[1][2][3]

Unit

A person's stock of skills, valued by the earnings it yields

Recovery means

Not applicable

Measured by

Private rate of return to a year of schooling or training, estimated from Mincer earnings regressions

Human capital reconceived as a resource that firms compete on: the knowledge, skills, and abilities of a workforce, which under the resource-based view can source a competitive advantage when they are valuable, rare, and hard to imitate. The strategic literature keeps Becker's general-versus-specific distinction but reads it through the firm, since firm-specific skills are harder for rivals to poach and so are more defensible, while general skills walk out of the door with the worker. Ployhart and Moliterno's 2011 Emergence of the Human Capital Resource argued that individual knowledge, skills, and abilities do not automatically become a unit-level resource: they emerge into one through the coordination and interaction of people, so a firm's human capital is more than the sum of its employees' schooling. Here the stock sits in an organisation rather than a person, and the governing question is appropriability, not the private rate of return.[4]

Unit

A workforce's collective knowledge and skill, held as a firm resource

Recovery means

Not applicable

Measured by

Archival or perceptual indices of workforce skill linked to firm performance; specificity of the human capital

Human capital as education entering the study of who ends up where: in status-attainment and stratification research, schooling is the main resource that converts family origins into occupational destinations. The Blau and Duncan path model, and the Wisconsin model that grew from it, placed educational attainment on the causal path between a father's occupation and a son's, and Sewell, Haller, and Portes's 1969 The Educational and Early Occupational Attainment Process traced how ability and social-psychological expectations feed schooling, which in turn drives occupational status. Coleman's 1988 Social Capital in the Creation of Human Capital made the tie explicit in the other direction, arguing that social capital in the family and community is what produces the human capital of the next generation. Here human capital is a variable inside a mobility model, measured in years of schooling, and read for its part in reproducing or disrupting inequality rather than for a private return.[5][6]

Unit

Years of schooling as a link between social origins and destinations

Recovery means

Not applicable

Measured by

Educational attainment as a mediator in path models of occupational status

Human capital as the standard account of why schooling pays in the labour market, and the site of the long argument over whether it really does the paying. The economics of education estimates the return to a year of schooling: Psacharopoulos and Patrinos's 2004 Returns to Investment in Education: A Further Update pooled decades of country studies and reported average private returns near ten percent a year, read as the yield on human-capital investment. Spence's 1973 Job Market Signaling offered the rival reading, that schooling may raise earnings not by building productive skill but by signalling pre-existing ability to employers who cannot observe it directly, so the same wage-and-schooling correlation is consistent with a story in which education adds no human capital at all. Distinguishing the two, whether the diploma builds the worker or merely sorts them, is the central unsettled question of the field.[7][8]

Unit

The private return to a year of schooling

Recovery means

Not applicable

Measured by

Mincerian returns to schooling; sheepskin, screening, and signaling tests that try to separate skill-building from sorting