The American fixation with marriage, so prevalent in today's debates over marriage for same-sex couples, owes much of its intensity to a small group of reformers who introduced Americans to marriage counseling in the 1930s. Today, millions of couples seek help to save their marriages each year. Over the intervening decades, marriage counseling has powerfully promoted the idea that successful marriages are essential to both individuals' and the nation's well-being.

Rebecca Davis reveals how couples and counselors transformed the ideal of the perfect marriage as they debated...