Women economists receive less credit for co-authored papers, contributing to a tenure gap. While solo-authored publications benefit men and women equally, each additional co-authored paper increases a man's tenure probability significantly more than a woman's, especially when co-authoring with men. This bias in credit attribution appears to be driven by beliefs about ability and not by actual differences in contribution, as demonstrated by experiments.

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This paper presents compelling observational and experimental evidence of a gender bias in credit attribution for group work in economics. The combination of real-world data and controlled experiments strengthens the argument. While the experimental settings don't perfectly mirror the academic world and the counterfactual analysis has limitations, the multiple approaches and robustness checks increase the validity of the findings. There's no obvious conflict of interest.