According to a prominent hypothesis, the occurrence of educational mismatches is consistent with human capital theory since over- and undereducation are substitutes for heterogeneity in the abilities and skills among educational peers. Using German data[superscript 1] of literacy and numeracy test scores, I find evidence that compared to their…

We examine the importance of adult functional literacy skills for individuals using a quantile regression methodology. The inclusion of the direct measure of basic skills reduces the return to schooling by 27%, equivalent to two additional years of schooling, while a one standard deviation increase in the score increases earnings by 20%. For those…