Philip J. Kellman, Ph.D, is Professor and Cognitive Area Chair in the Department of Psychology at the University of California, Los Angeles, and Director of the UCLA Human Perception Laboratory. His research spans basic and applied areas in cognitive science, especially visual perception, visual cognition, cognitive development, and learning. In recent years, he and his colleagues have pioneered the application of perceptual and adaptive learning technologies in mathematics, science, medical, and professional training settings. Prof. Kellman has won several national awards for research, including the William Chase Memorial Award from Carnegie-Mellon University, the Boyd R. McCandless Young Scientist Award from the American Psychological Association, and the Wolf Aviation Prize from the Alfred & Constance Wolf Foundation. He previously taught at Swarthmore College, where he served as Chair of the Division of Natural Sciences and Engineering. He has been a Senior Visiting Scientist at NASA Ames Research Center and at Uppsala Universitet in Uppsala, Sweden, and a Fulbright Scholar in Australia. He is the founder and President of Insight Learning Technology, Inc., and holds patents in computer-based learning technology and air trafﬁc control systems. Author of over 100 articles and published abstracts, his research has been funded in recent years by the National Science Foundation, the National Institutes of Health, the Ofﬁce of Naval Research, NASA, and the U.S. Department of Education.