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Erscheinungsjahr: 
2010
Schriftenreihe/Nr.: 
Working Paper No. 2010:1
Verlag: 
Uppsala University, Department of Economics, Uppsala
Zusammenfassung: 
I study the size and sources of the monetary return to college achievement as measured by cumulative Grade Point Average (GPA). I first present evidence that the return to achievement is large and statistically significant. I find, however, that this masks variation in the return across different groups of people. In particular, there is no relationship between GPA and earnings for graduate degree holders but a large and positive relationship for people without a graduate degree. To reconcile these results, I develop a model where students of differing and initially uncertain ability levels choose effort level in college and whether to earn a graduate degree. College achievement and graduate attainment are allowed to increase human capital and be used by employers to screen workers. In the separating equilibrium studied, workers who earn a graduate degree can effectively signal high productivity to employers. As a result, employers use undergraduate GPA-a noisy signal of productivity-to screen only the workers who do not hold a graduate degree. Viewing the empirical results through the lens of this equilibrium, the zero GPA-earnings relationship for graduate degree holders and the positive and large relationship for people without a graduate degree suggests that most of the reutrn to achievement net of graduate educational attainment is driven by sorting.
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