Women who go to college intending to become engineers stay in the profession less often than men. Why is this? While multiple reasons have been offered in the past, a new study co-authored by an MIT sociologist develops a novel explanation: The negative group dynamics women tend to experience during team-based work projects makes the profession less appealing. More specifically, the study finds, women often feel marginalized, especially during internships, other summer work opportunities, or team-based educational activities. In those situations, gender dynamics seem to generate more opportunities for men to work on the most challenging problems, while women tend to be assigned routine tasks or simple managerial duties. In such settings, “It turns out gender makes a big difference,” says Susan Silbey, the Leon and Anne Goldberg Professor of Humanities, Sociology, and Anthropology at MIT, and co-author of a newly-published paper detailing the study.