In an era when half of marriages end in divorce, cohabitation has become more commonplace and those who do get married are doing so at an older age. So why do people marry when they do? And why do some couples choose to cohabit? A team of expert family sociologists examines these timely questions in Marriage and Cohabitation, the result of their research over the last decade on the issue of union formation. Situating their argument in the context of the Western world's 500-year history of marriage, the authors reveal what factors encourage marriage and cohabitation in a contemporary society wh