Monk, Courtney; Sandefur, Justin; Teal, Francis - Centre for the Study of African Economies (CSAE), … - 2008
model by regressing
apprenticeship on the exogenous regressors and the instruments, while also controlling for city
fixed … overall sign of the bias in the
OLS.
We partly address the issue of unobserved ability by controlling directly for ability in …, by controlling for ability, we find a positive,
though insignificant and small, return to apprenticeship.
In Columns [4 …