In addition to teaching, he is also the Director of the Center for Restoration Studies at the University. Dr. Foster's scholarly work has concentrated on the place of the Stone-Campbell Movement in American Christianity and the nature of the idea of Christian unity. His book Will the Cycle Be Unbroken? Churches of Christ Face the 21st Century analyzes the current and future shape of Churches of Christ. He serves as one of three General Editors of the forthcoming Encyclopedia of the Stone-Campbell Movement.