Her areas of research interest include Caribbean religion and culture in diasporic and transnational contexts. She has published on the Spiritual Baptists, the Black Church, black women and motherhood, and race, gender, and representation in film. Duncan is a co-author of the forthcoming textbook Black Church Studies: An Introduction (Abingdon Press, Fall 2007). In 2007 she is a research associate in the Womens Studies in Religion Program at Harvard Divinity School and a visiting associate professor of Womens Studies and Religion and Society.