ALAN S. KAUFMAN, PhD, is Clinical Professor of Psychology at Yale University School of Medicine and resides in San Diego, California. He is the author or coauthor of numerous, widely used psychological assessment instruments and books, and is a series editor (with Nadeen Kaufman) of the Essentials of Psychological Assessment series (Wiley). He and Elizabeth Lichtenberger have collaborated on a number of books, including Essentials of WAIS®-III Assessments. His most recent tests include the second editions of the Kaufman Assessment Battery for Children (KABC-II), Kaufman Test of Educational Achievement (KTEA-II), and Kaufman Brief Intelligence Test (KBIT-2). ELIZABETH O. LICHTENBERGER, PhD, is a clinical psychologist residing in Carlsbad, California. She has coauthored numerous books, including Essentials of Assessment Report Writing (with Nancy Mather, Nadeen Kaufman, and Alan Kaufman), Essentials of KABC-II Assessment (with Alan Kaufman, Elaine Fletcher-Janzen, and Nadeen Kaufman), and Essentials of WIAT-II® and KTEA-II Assessment (with Donna Smith), all from Wiley.