Herbert J. Walberg, Ph.D., is a research professor of education and psychology at the University of Illinois at Chicago and distinguished visiting fellow (1999-2004) at the Hoover Institution, Stanford University. He holds a Ph.D. from the University of Chicago and formerly served as assistant professor at Harvard University. Walberg has written and edited more than 55 books and written nearly 250 articles on such topics as educational effectiveness and exceptional human accomplishments. Among his most recent books are the International Encyclopedia of Educational Evaluation and Psychology and Educational Practice.