Gender disparities in tenure and promotion persist across STEM fields, including economics, partly due to statistical discrimination when review committees cannot clearly assess individual contributions to collaborative work. In Study 1, using publication data from 104 RePEc-ranked economics journals (October 2020–March 2021), we find that 74% of female economists (vs. 19% of male) coauthor in male-dominated teams, settings where attribution ambiguity may exacerbate evaluative bias. In Study 2, a randomized survey experiment (N = 233) with female economists shows that exposure to empirical evidence on attribution bias significantly shifts coauthorship preferences toward female-dominated teams, especially among early-career researchers. A follow-up survey (N = 54) indicates that the intervention provided new information, retained for months, that influenced how participants think about coauthorship strategically. These findings suggest that integrating attribution-bias awareness into mentoring and professional development, particularly for early-career scholars, can promote strategic coauthorship choices, enhance individual visibility, and help address the leaky pipeline reinforced by evaluative bias, much like the advice for Ph.D. candidates to produce solo-authored job market papers to signal individual ability.