Abstract: The first challenge for economic growth theory is to understand the transition from stagnation to growth at the time of the Industrial Revolution and in particular to identify the main factor(s) that triggered the take-off. Doing so also helps to understand why there are poor and rich...

We develop a new directed-search model of fertility and marriage, and apply it to two empirical problems: the rise in unmarried women’s share of births since 1970, and the fact that black women have lower marriage rates and higher rates of unmarried births than white women. The premise is that...

By reducing the risk of unwanted parenthood, more effective contraception reduces the cost of sex outside of marriage, increasing the value of single life. Could this explain why marriage and birth rates declined in the U.S. after 1970?. We illustrate our hypothesis with a one-period example. We...

Beyond natural sterility, there are two main types of childlessness: one driven by poverty and another by the high opportunity cost to child-rearing. We argue that taking childlessness and its causes into account matters for assessing the impact of development policies on fertility. We measure...

Among possible lifestyles, the DINKs (“double income no kids”) are couples choosing to be childless, while the DEWKs (“dually employed with kids”) are couples with children. We develop a theory of marriage and parenthood decisions, where we distinguish the choice to have children from...