Thomas H. Crook, Ph.D. is a psychologist and author of the new book, The Memory Advantage: Improve Your Memory, Mood, and Confidence Throughout Life. He is also the former chairman of both the National Institute of Mental Health and American Psychological Association Task Forces on the Diagnoses and Treatment of Age-Associated Memory Impairment. The author of numerous book and papers on the subject, a sought after speaker, Dr. Crook now serves as president of Psychologix, a worldwide research association.