Diversity in authorship shapes which questions science asks and whose expertise it draws on. Here we analyse 9.2 million research articles published between 2000 and 2024 across 22 disciplines. Women's share of last authorships rose from 14% to 24% but has plateaued since 2018, and researchers based in low- and middle-income countries remain under-represented in high-visibility journals relative to their output. Gaps are smallest where funders and journals have adopted explicit policies. We discuss interventions that could accelerate change.
Introduction
Few areas of research have developed as quickly as research equity. Over the past decade, conceptual and technical advances have transformed what can be measured and engineered1–4, and have brought long-standing questions within reach of experiment5,6.
Yet the field continues to be shaped by persistent disparities in who is credited for research7. In this article, we survey recent progress, highlight emerging consensus and disagreement, and identify the developments most likely to move the field forward.
Foundations
Early work established the core concepts and the first quantitative models8–10. These frameworks remain useful but rest on simplifying assumptions whose limits are increasingly apparent11.
A unifying theme is that progress has come from combining new measurements with models that make falsifiable predictions.
Recent advances
Three developments stand out. First, new experimental platforms allow systematic, high-throughput measurements12–14. Second, computational methods now enable predictions that can be tested directly15,16. Third, large collaborative datasets have made it possible to compare results across laboratories and systems17.
Approach
Strengths
Limitations
Controlled experiments
Causal inference, precision
Limited scale and realism
Large-scale observation
Generality, statistical power
Confounding factors
Computational models
Mechanistic insight, prediction
Dependence on assumptions
Open questions
Important questions remain unresolved, including how findings generalize across scales and contexts18, and how best to translate insight into application19,20.
Outlook
We anticipate that the next decade will see research equity move from proof-of-principle demonstrations to robust, predictive science. Achieving this will require shared standards, open data and sustained support for interdisciplinary teams.
References
1.
Ortega, Y. Recent progress in research equity. Proc. Soc. Adv. Sci. 84, 534–548 (2023).
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Cite this article
Dlamini, F. & Marquez, N. Persistent gaps in authorship by gender and geography across disciplines. Lumen3, 172–183 (2025). https://doi.org/10.5555/lmn-2025-00001