ALAN S. KAUFMAN, PhD, and NADEEN L. KAUFMAN, EdD, are on the faculty at Yale University School of Medicine. They are series editors of the Essentials of Psychological Assessment series and authors of numerous books on psychological assessment as well as psychological assessment instruments. Their tests include the new KABC-II as well as the second editions of the Kaufman Test of Educational Achievement (KTEA-II) and the Kaufman Brief Intelligence Test (KBIT-2).

ELIZABETH O. LICHTENBERGER, PhD, is a psychologist at the Salk Institute in La Jolla, California, and the author of several Essentials books.

ELAINE FLETCHER-JANZEN, EdD, NCSP, is a school psychologist who teaches at the University of Northern Colorado, consults for area school districts, and works as a trainer for AGS, the publisher of the KABC-II.