Heterogeneous returns to college over the life course

Area of Science:

• Economics
• Sociology
• Education Policy

Background:

• Higher education is widely believed to yield significant economic returns.
• Previous studies often analyzed income at single time points or averaged over time.
• The age-dependent variation in returns to higher education remains underexplored.

Purpose of the Study:

• To investigate how the economic returns of a college degree change across the lifespan.
• To examine how these age-related patterns differ between men and women.
• To analyze the influence of college graduation propensity on wage returns.

Main Methods:

• Utilized data from the National Longitudinal Survey of Youth 1979 cohort.
• Employed propensity score-based matching to control for confounding factors.
• Applied multilevel growth curve models to analyze age-related wage trajectories.

Main Results:

• College graduates consistently earn more than high school graduates by age 30.
• For men, the wage premium associated with a college degree increases throughout their careers.
• For women, the advantage diminishes with age but remains significant at age 50.
• Wage returns are modest for individuals with mid-level college graduation propensity.
• Significant wage returns are observed for low-propensity graduates and, for men, high-propensity graduates.

Conclusions:

• The economic benefits of higher education are dynamic and vary significantly by age and gender.
• Graduation propensity is a key factor influencing the magnitude of wage returns to college.
• These findings highlight the complex, life-cycle nature of returns to higher education.