Dr. John Gottman, the countrys preeminent researcher on marriage, is famous for his Love Lab at the University of Washington in Seattle where he deciphers the mysteries of human relationships through scientific research. His thirty-five years of exploration have earned him numerous awards, including from the National Institute of Mental Health, the American Psychological Association, and the American Association for Marriage and Family Therapy. Now, Dr. Gottman offers surprising findings and advice on the characteristic that is at the heart of all relationships Trust. Dr. Gottman has developed a formula that precisely calculates any couples loyalty level. The results determine a relationships likely future, including the potential for one or both partners to stray.