Can this political marriage be saved? BY GARY BAUER Psychologists have discovered that the most important factor in predicting whether a marriage will succeed or fail is the existence of contempt. When one or both partners display contempt -- the intense feeling or attitude of regarding someone or something as inferior -- the union, ultimately and almost inevitably, will fail. Psychologist John Gottman has even developed a methodology that enables him to predict divorce with an astonishingly high degree of accuracy, up to 90 percent. While watching a couple interact, Mr. Gottman looks for the subtle signs -- microexpressions such...