Cecil R. Reynolds, PhD, is Emeritus Professor of Educational Psychology, Professor of Neuroscience, and Distinguished Research Scholar at Texas A&M University. He is an author of over 300 scholarly publications; an author or editor of over 50 books; and a creator of numerous widely used psychological tests of behavior, cognition, and personality. Dr. Reynolds maintained a clinical practice treating trauma victims and individuals with traumatic brain injury for 25 years before retiring from clinical work. He is past president of the National Academy of Neuropsychology (NAN) and the American Psychological Association (APA) Divisions of Evaluation, Measurement, and Statistics; Clinical Neuropsychology; and School Psychology. He serves on the editorial boards of 11 journals. Dr. Reynolds has been an editor or associate editor of several journals, and is currently editor-in-chief of Psychological Assessment. Dr. Reynolds has received numerous awards from NAN, APA, and other organizations.

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Randy W. Kamphaus, PhD, is Professor and Head of the Department of Educational Psychology at the University of Georgia. A focus on issues related to clinical assessment has led him to pursue research in classification methods, differential diagnosis, test development, and learning disability and attention-deficit/hyperactivity disorder (ADHD) assessment. Dr. Kamphaus has served as principal investigator, coinvestigator, or consultant on federally funded research projects dealing with early intervention and prevention, child classification methods, prevalence of ADHD and conduct disorder in Latin America, and aggression reduction in schools. As a licensed psychologist and a Fellow of the American Psychological Association (APA), he has contributed extensively to his profession, and he is past president of the APA’s Division of School Psychology. Dr. Kamphaus has also authored or coauthored five books, three psychological tests, more than 40 scientific journal articles, and more than 20 book chapters. He also participates in scholarship in the field through work as an editorial board member, associate editor, test reviewer, and newsletter editor.