When men win the lottery they are more likely to get married and have children; when women win the lottery they are more likely to get divorced (with no impact on fertility).

Abstract: We estimate the effects of large, positive wealth shocks on marriage and fertility in a sample of Swedish lottery players. For male winners, wealth increases marriage formation and reduces divorce risk, suggesting wealth increases men’s attractiveness as prospective and current partners. Wealth also increases male fertility. The only discernible effect on female winners is that wealth increases their short-run (but not long-run) divorce risk. Our results for divorce are consistent with a model where the wealthier spouse retains most of his/her wealth in divorce. In support of this assumption, we show divorce settlements in Sweden often favor the richer spouse.