Stevenson, Betsey; Wolfers, Justin - Institute for the Study of Labor (IZA) - 2007
a combination of increased longevity with a declining age gap between husbands and wives. Cohabitation has also become … increasingly important, emerging as a widely used step on the path to marriage. Out-of-wedlock fertility has also risen, consistent … pill and women’s control over their own fertility; sharp changes in wage structure, including a rise in inequality and …