Meeting evaluation criteria based on authorship positions by gender, academic age, and research field: the Spanish case Chinchilla-Rodríguez, Zaida Escabias Machuca, Manuel Morillo, Fernanda Author’s position Gender Academic Age Evaluation criteria Coalition for Advancing Research Assessment (CoARA) This work was supported by the Spanish Ministry of Science, and Innovation, through the project RESPONSIBLE (PID2021-128429NB-I00) MCIN/AEI/10.13039/501100011033/The European Regional Development Fund (ERDF), European Union (EU). This study aims to provide an overview of the distribution of the Spanish scientific workforce focusing on differences in authorship position by gender, academic age, number of authors, and research field. The results show some degree of parity in younger age cohorts and areas such as biomedicine, but little participation of females in the oldest age cohort and areas such as mathematics. In addition, the presence of women undergoes significant changes in certain areas and decreases in oldest age cohorts. This circumstance leads to a low probability of finding women or junior researchers in relevant authorship positions. Policymakers should know that inequalities in the scientific workforce must be considered when addressing/proposing scientific evaluation criteria. 2025-03-10T13:25:27Z 2025-03-10T13:25:27Z 2025-02-24 journal article Z. Chinchilla-Rodríguez et al. Meeting evaluation criteria based on authorship positions. Research Evaluation, 2025, 34(1), rvaf008. https://doi.org/10.1093/reseval/rvaf008 https://hdl.handle.net/10481/102971 10.1093/reseval/rvaf008 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Oxford University Press