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(Don't) Walk This Way: The Econometrics of Crosswalks

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  • Millimet, Daniel L.

    (Southern Methodist University)

Abstract

It is increasingly common in empirical research to merge data sets containing different units of observation. When the units are not nested, a crosswalk specifying how the units from one data source are allocated to the units of the other is needed. Unfortunately, most crosswalks are ad hoc, a fact that is often ignored by researchers and has not caught the attention of econometricians. Here, I show that use of an incorrect crosswalk induces measurement error that is necessarily nonclassical and can be consequential. I discuss and illustrate the ramifications of using a flawed crosswalk, present two specification tests, offer potential solutions, and provide an application to the effects of social media on political polarization.

Suggested Citation

  • Millimet, Daniel L., 2024. "(Don't) Walk This Way: The Econometrics of Crosswalks," IZA Discussion Papers 17154, Institute of Labor Economics (IZA).
    • Handle: RePEc:iza:izadps:dp17154
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    JEL classification:

    • C18 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Methodolical Issues: General
    • C81 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Methodology for Collecting, Estimating, and Organizing Microeconomic Data; Data Access
    • D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior
    • J16 - Labor and Demographic Economics - - Demographic Economics - - - Economics of Gender; Non-labor Discrimination

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