BA, Dartmouth College; MA, Stanford University; PhD, Yale University

BA equiv., University of Düsseldorf; MA, Free University of Berlin; PhD, Stanford University

Erstes Staatsexamen (MA equivalent) Pädagogische Hochschule, Flensburg; PhD, New York University

BA, Yale College; MA, PhD, Johns Hopkins University

BA, Willamette University; MA, University of Washington; PhD, Cambridge University

BS, Florida State University; MA, MPhil, PhD, Columbia University

BA, Pomona College; MS, University of Colorado Boulder; PhD, University of Texas at Austin