Living arrangements have undergone considerable change in recent decades. In most Western countries marriage is no longer the exclusive context of family formation. In the United States (US) for instance, the number of unmarried couples nearly doubled in the 1990s, from 3:2 million couples in...

Living arrangements have undergone considerable change in recent decades. In most Western countries marriage is no longer the exclusive context of family formation. In the United States (US) for instance, the number of unmarried couples nearly doubled in the 1990s, from 3:2 million couples in...