Using a very large sample of matched author-referee pairs, we examine how referees' and authors' genders affect the referees' recommendations. Relying on changing author-referee matches, we find no evidence of gender differences among referees in charitableness, nor is there any effect of the interaction between the referees' and authors' genders. With substantial laboratory research showing gender differences in fairness, the results suggest that outside the laboratory, an ethos of objectivity can overcome possible tendencies toward same-group favoritism or opposite-group discrimination.
Abrevaya, J., & Hamermesh, D. (2012). Charity and favoritism in the field: Are female economists nicer (to each other)? Review of Economics and Statistics, 94(1), 202-207. https://doi.org/10.1162/REST_a_00163