James P. McCullough, Jr., PhD, is a fellow of the American Psychological Association and was elected a Diplomate in Clinical Psychology by the American Board of Psychological Forensic Examiners. He is is Emeritus Professor of Psychology at Virginia Commonwealth University, where he served on the faculty for 45 years. An award-winning educator and researcher, Dr. McCullough's areas of special interest are dysthymia, double depression, and chronic major depression, particularly diagnostic criteria; unipolar diagnostic category psychosocial comparisons; and cognitive and single-case methodology evaluating both private practice and research.