Fred I. Greenstein is Professor of Politics Emeritus at Princeton University. His books include Children and Politics (1965), Personality and Politics (1969), The Hidden-Hand Presidency: Eisenhower as Leader (1982), How Presidents Test Reality (1989, with John P. Burke), The Presidential Difference: Leadership Style from FDR to Barack Obama (2009), and Inventing the Job of President: Leadership Style from George Washington to Andrew Jackson 2009. He is a fellow of the American Academy of Arts and Sciences and past president of the International Society for Political Psychology. He received a BA from Antioch College in 1953 and a PhD. from Yale University in 1960.