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Imperfect signals

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  • Graetz, Georg

Abstract

A pre-condition for employer learning is that signals at labor market entry do not fully reveal graduates' productivity. I model various distinct sources of signal imperfection - such as noise and multi-dimensional types - and characterize their implications for the private return to skill acquisition. Structural estimates using NLSY data suggest an important role for noise, pushing the private return below the social return. This induces substantial under-investment and causes output losses of up to 22 percent. Value-added-based evidence from Swedish high school graduates also points to noise and under-investment. Highlighting the distinction between schooling duration and skills acquired, I conclude that individuals likely spend too much time in school but learn too little.

Suggested Citation

  • Graetz, Georg, 2023. "Imperfect signals," LSE Research Online Documents on Economics 121329, London School of Economics and Political Science, LSE Library.
    • Handle: RePEc:ehl:lserod:121329
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    File URL: http://eprints.lse.ac.uk/121329/
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    References listed on IDEAS

    as
    1. Feng, Andy & Graetz, Georg, 2017. "A question of degree: The effects of degree class on labor market outcomes," Economics of Education Review, Elsevier, vol. 61(C), pages 140-161.
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    More about this item

    Keywords

    human capital; signaling; employer learning; returns to schooling;
    All these keywords.

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • J24 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Human Capital; Skills; Occupational Choice; Labor Productivity
    • J31 - Labor and Demographic Economics - - Wages, Compensation, and Labor Costs - - - Wage Level and Structure; Wage Differentials
    • I20 - Health, Education, and Welfare - - Education - - - General

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