Robert Kegan
Robert Kegan (born August 24, 1946) is an American developmental psychologist. He is a licensed psychologist and practicing therapist, lectures to professional and lay audiences, and consults in the area of professional development and organization development.He was the William and Miriam Meehan Professor in Adult Learning and Professional Development at Harvard Graduate School of Education. He taught there for forty years until his retirement in 2016. He was also Educational Chair for the Institute for Management and Leadership in Education and the co-director for the Change Leadership Group. Provided by Wikipedia