About Eldar Shafir Eldar Shafir, a student, close friend, and collaborator of Tversky's, is Class of 1987 Professor of Behavioral Science and Public Policy at Princeton University. Books by Eldar Shafir The Essential Tversky by (author) Amos Tversky edited by Eldar Shafir foreword by Michael Lewis afterword by Daniel Kahneman