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Discussion Paper Details

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Title: Does Education Raise Productivity or Just Reflect It?

Author(s): Arnaud Chevalier, Colm Harmon, Ian Walker and Yu Zhu

Publication Date: July 2003

Keyword(s): human capital, screening and signalling

Programme Area(s): Labour Economics

Abstract: It is clear that education has an important effect on wages paid in the labour market. It is not clear, however, whether this is due to the role that education plays in raising the productivity of workers (the human capital explanation) or whether education simply reflects the ability of the worker (through a signalling role). In this Paper we describe and implement, using a variety of UK datasets, a number of tests from the existing literature for discriminating between the two explanations. We find little support for signalling ideas in these tests. We have, however, severe reservations about these results because of our doubts about the power of these tests and the appropriateness of the data. We propose an alternative test, based on the response of some individuals to a change in education incentives offered to other individuals caused by the changes in the minimum school leaving age in the 1970s. Using this idea, we find that data in the UK appears to strongly support the human capital explanation.

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Bibliographic Reference

Chevalier, A, Harmon, C, Walker, I and Zhu, Y. 2003. 'Does Education Raise Productivity or Just Reflect It?'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=3993