One day last week bustling little Sociology Professor Ernest Watson Burgess adjusted his spectacles and began to read a long, technical paper to his class at the University of Chicago. As the 51-year-old bachelor proceeded, his marriageable students became more and more attentive. When he finished, he had given them a test-proof formula for choosing a wife or husband, for predicting whether a marriage would be successful.
Professor Burgess was reporting what he and his colleague, Dr. Leonard S. Cottrell Jr., had learned in one of the most thorough statistical studies of marriage ever made in the U. S. It had taken...