John Kennes

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Unmarried fertility was a lot lower in the 1970s than in the 1990s. It was also the case that unmarried mothers had much lower marriage rates than non-mothers, a differential that has largely vanished over time. Could this marriage-market penalty have been strong enough to explain why unmarried fertility rates were lower then? To explore this issue, we(More)
Many matching markets are dynamic, with one side's priorities often depending on previous allocations. This creates opportunities for manipulations that do not exist in static matching problems. The school-choice problem, for example, exhibits considerable student mobility and a priority system that favors incumbent students and their siblings. In such a(More)
By reducing the risk of unwanted parenthood, better contraception reduces the cost of unmarried sex, increasing the value of single life. A simple one-period example suggests this could explain why marriage and birth rates have declined since 1970. We extend the analysis to allow for repeated matching over many periods, modelling the shotgun-marriage,(More)
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