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Unobservable, but Unimportant?: The Influence of Personality Traits (and Other Usually Unobserved Variables) for the Evaluation of Labor Market Policies

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  • Marco Caliendo
  • Robert Mahlstedt
  • Oscar A. Mitnik

Abstract

Many commonly used treatment effects estimators rely on the unconfoundedness assumption (“selection on observables") which is fundamentally non-testable. When evaluating the effects of labor market policies, researchers need to observe variables that affect both treatment participation and labor market outcomes. Even though in many countries it is possible to access (very) informative administrative data, concerns about the validity of the unconfoundedness assumption remain. The main concern is that the observed characteristics of the individuals may not be enough to properly address potential selection bias. This is especially relevant in light of the research on the influence of personality traits and attitudes on economic outcomes. We exploit a unique dataset that contains a rich set of administrative information on individuals entering unemployment in Germany, as well as several usually unobserved characteristics like personality traits, attitudes, expectations, and job search behavior. This allows us to empirically assess how estimators based on the unconfoundedness assumption perform when alternatively including or not these usually unobserved variables. Our findings indicate that these variables play a significant role for selection into treatment and labor market outcomes, but do not make for the most part a significant difference in the estimation of treatment effects, compared to specifications that include detailed labor market histories. This suggests that rich administrative data may be good enough to draw policy conclusions on the effectiveness of active labor market policies.

Suggested Citation

  • Marco Caliendo & Robert Mahlstedt & Oscar A. Mitnik, 2014. "Unobservable, but Unimportant?: The Influence of Personality Traits (and Other Usually Unobserved Variables) for the Evaluation of Labor Market Policies," Discussion Papers of DIW Berlin 1407, DIW Berlin, German Institute for Economic Research.
  • Handle: RePEc:diw:diwwpp:dp1407
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    More about this item

    Keywords

    Matching; Unconfoundedness; Unobervables; Selection Bias; Heterogeneity; Personality Traits; Active Labor Market Policy;
    All these keywords.

    JEL classification:

    • C21 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Cross-Sectional Models; Spatial Models; Treatment Effect Models
    • D4 - Microeconomics - - Market Structure, Pricing, and Design
    • J68 - Labor and Demographic Economics - - Mobility, Unemployment, Vacancies, and Immigrant Workers - - - Public Policy

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