Changes in ability distribution impact wages more than education level.
The article examines changes in wage distributions by separating the effects of changes in population characteristics and returns to these characteristics. By using quantile regression and correcting for schooling decisions, the study isolates the impact of schooling and unobserved ability on wage distribution changes in the US from 1983 to 1993. Results show that changes in ability distribution had a negative effect on low wages, offsetting the positive impact of schooling changes. Additionally, changes in unobserved ability had a larger impact on wages than changes in distance to college.