A Search Model of Marriage with Differential Fecundity

It is commonly observed that across societies and time, women tend to marry older men. The traditional explanation for this phenomenon is that wages increase with age and hence older men are more attractive in the marriage market. The explanation holds even where differences in fertility between men and women are taken in account. This explanation, however, involves an implicit assumption about female specialization in home production - an assumption that does not generally hold, especially in modern times. This paper shows that a marriage market equilibrium where women marry earlier in life than men can be achieved without making any assumptions about the wage process or gender roles. The only driving force in this two sided search model is the asymmetry in fertility horizons between men and women. When the model is calibrated with Census Data, the average age at first marriage and the pattern of the sex ratio of single men to single women over different age groups mimics the patterns observed in developed countries during the last decade (e.g. France, the U.S. and Sweden). However, the fit is less accurate for developing countries and for earlier decades in developed countries. This result may indicate a more important role of social norms and wages in the determination of marriage pattern in those cases.