He is the author of over one hundred articles in the fields of presidential politics, American immigration and national identity, American foreign policy, leadership and political psychology. He has also published fifteen books including: Psychological Needs and Political Behavior (Free Press), The Handbook of Political Socialization: Theory and Research (Free Press), The Political Psychology of the Gulf War (University of Pittsburgh Press), The Clinton Presidency: Campaigning, Governing and the Psychology of Leadership (Westview Press); The Psychological Assessment of Presidential Candidates (New York University Press, 1996, updated paperback edition,1998 Routledge Press), (edited with John Duckitt Political Psychology: Cultural and Cross-cultural Foundations (Macmillan, 2000), One America?: Political Leadership, National Identity, and the Dilemmas of Diversity(Georgetown University Press, 2001); America's Second Civil War: Political Leadership in a Divided Society (Transaction 2002), (edited with Deborah Larson) Good Judgment in Foreign Policy: Theory and Research (Rowman and Littlefield 2002); In his Father's Shadow: The Transformations of George W. Bush(Palgrave/Macmillan, 2004); The 50% American: National Identity in a Dangerous Ag e(2005), Noncitizen Voting and American Democracy(Rowman & Littlefield, 2009); (edited with Peter Suedfeld) Understanding the Bush Doctrine: Psychology and Strategy in an Age of Terrorism (Routledge, 2007); and National Security in the Obama Administration: Reassessing the Bush Doctrine (Routledge, 2010).

His book on the Clinton presidency, High Hopes: The Clinton Presidency and the Politics of Ambition (New York University Press, 1996, updated paperback editio ,1998 Routledge Press) won the 1997 American Political Science Association's Richard E. Neustadt Award for the best book published on the presidency and was also awarded the National Association for the Advancement of Psychoanalysis' Gradiva Award for the best published work in the category of biography in 1998. He was elected president of the International Society of Political Psychology for the 2003/04 academic year and in 2006 won the award for Excellence in Research, Scholarship and Creative works.
His newest book Barack Obama and the Politics of Redemption was published by Routledge Press in 2012.