Good marriages have a lot of things in common, while unhappy marriages are as different in as many ways as there are unhappy people married to each other. Yet the factors which make for either being happy or unhappy are often far more predictable than most folks think. Dr. John Gottman is a psychologist and researcher and based upon his findings published in the Journal of Family Psychology, it is indeed possible to predict, with 94% accuracy, which marriages will end in failure long before the couples are ready to call it quits.