Decomposing Trends in the Gender Gap for Highly Educated Workers

Joseph Altonji, John Humphries, Yagmur Yuksel and Ling Zhong

No 34133, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: This paper examines the gender gap in log earnings among full-time, college-educated workers born between 1931 and 1984. Using data from the National Survey of College Graduates and other sources, we decompose the gender earnings gap across birth cohorts into three components: (i) gender differences in the relative returns to undergraduate and graduate fields, (ii) gender-specific trends in undergraduate field, graduate degree attainment, and graduate field, and (iii) a cohort-specific “residual component” that shifts the gender gap uniformly across all college graduates. We have three main findings. First, when holding the relative returns to fields constant, changes in fields of study contribute 0.128 to the decline in the gender gap. However, this decline is partially offset by cohort trends in the relative returns to specific fields that favored men over women, reducing the contribution of field-of-study changes to the decline to 0.055. Second, gender differences in the relative returns to undergraduate and graduate fields of study contribute to the earnings gap, but they play a limited role in explaining its decline over time. Third, much of the convergence in earnings between the 1931 and 1950 cohorts is due to a declining “residual component.” The residual component remains stable for cohorts born between 1951 and the late 1970s, after which it resumes its decline.

JEL-codes: I24 I26 J16 J31 J7 N32 (search for similar items in EconPapers)
Date: 2025-08
New Economics Papers: this item is included in nep-gen, nep-his, nep-lab and nep-ltv
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