Abstract: |
Previous studies report that adult height has significant associations with
wages even controlling for schooling. But schooling and height are imperfect
measures of adult cognitive skills (“brains”) and strength (“brawn”); further
they are not exogenous. Analysis of rich Guatemalan longitudinal data over 35
years finds that proximate determinants—adult reading comprehension skills and
fat-free body mass—have significantly positive associations with wages, but
only brains, and not brawn, is significant when both human capital measures
are treated as endogenous. Even in a poor developing economy in which strength
plausibly has rewards, labor market returns are increased by brains, not brawn. |