A study published in the Proceedings of the National Academy of Sciences (PNAS) reveals that women faculty in the University of California system earn 23% less than their male counterparts. Even after adjusting for academic field, campus location, and career stage, a 4.3% pay gap remains, which cannot be explained by differences in scholarly productivity or publication metrics.
Why Productivity Metrics Fail to Explain Wage Disparities
The “productivity hypothesis”—the idea that pay gaps stem from differences in research output—has been a primary explanation for salary disparities in higher education. To test this, researchers from UC San Diego’s School of Global Policy and Strategy and the Rady School of Management analyzed salary records alongside publication and citation data from Scopus.
According to Elizabeth Lyons, an associate professor at the School of Global Policy and Strategy, while productivity does influence pay, it fails to account for the persistent 4.3% gap. Even when accounting for academic rank, the gap remained largely unchanged. This suggests that the mechanisms driving pay inequality in academia are not purely tied to measurable research output or citation counts.
Did you know? While salary transparency is often touted as a solution to gender pay gaps, the UC system—where faculty salaries are publicly available—still experiences these disparities. This indicates that public data alone is insufficient to close the gap.
The Role of Academic Discipline in Compensation
The study found that pay inequality is not uniform across all departments. Researchers observed significant variations depending on the field of study. For instance, while anthropology and sociology showed detectable pay gaps, political science and economics did not.
Marta Serra-Garcia, a professor at the Rady School of Management, notes that these field-specific variations suggest pay gaps are not inevitable. The disparity is particularly stark when comparing economics and anthropology. Despite women making up less than 20% of economics faculty during the study period, the field showed no statistically detectable pay gap. In contrast, in anthropology, where gender representation is near equal, women earned approximately 93 cents for every dollar earned by men.
Standardization and Labor Market Dynamics
The researchers suggest that fields with smaller pay gaps may benefit from more centralized labor markets and standardized evaluation methods. In disciplines like economics and political science, scholarly output is often measured through clear, quantitative benchmarks. Conversely, fields like anthropology and sociology, which rely heavily on books and monographs, may lack the same level of standardized output evaluation, potentially leaving more room for subjective pay determination.
Future Trends in Academic Pay Equity
The findings from this study suggest that universities cannot rely on “one-size-fits-all” policies to address gender pay disparities. Instead, administrators may need to look at the specific hiring and promotion practices within individual departments. As Gaurav Khanna, a professor at the School of Global Policy and Strategy, emphasized, higher representation of women in a faculty does not automatically guarantee pay equity.
Future efforts to close the gap will likely focus on:
Frequently Asked Questions
Does higher publication output guarantee equal pay?
No. The study found that even when accounting for publications and citations, a 4.3% pay gap remained between male and female faculty.
Is salary transparency effective at closing the gap?
While transparency is a useful tool, the researchers found it is not a standalone fix. The UC system maintains public salary records, yet gender pay gaps persist.
Why do some fields have smaller pay gaps than others?
The study suggests that fields with more centralized labor markets and standardized ways of evaluating scholarly output, such as economics, tend to show fewer detectable pay gaps compared to fields like anthropology.
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