He received his Ph.D. from the University of North Carolina at Chapel Hill, and his B.A. in Philosophy and Psychology from the College of William and Mary. He completed a summer post-doctoral appointment at the Duke University Kenan Institute for Ethics, and was a Fellow at the Stanford University Center for Compassion and Altruism Research and Education (CCARE). Daryl is a member of the Moral Psychology Research Group, an interdisciplinary group of psychologists, neuroscientists, and philosophers who study moral cognition. Before coming to Penn State, he was a faculty member at the University of Iowa.