12 juin 2019
Marion Goussé, professeure au Département d'économique, publiera dans la très prestigieuse revue Journal of Political Economy un article intitulé "Like Attract Like? A Structural Comparison of Homogamy Across Same-Sex and Different-Sex Households", co-écrit avec Edoardo Ciscato (KU Leuven) et Alfred Galichon (NYU).
Ci-dessous, le résumé du papier en anglais :
In this paper, we extend Gary Becker’s empirical analysis of the marriage market to same-sex couples. Becker’s theory rationalizes the well-known phenomenon of homogamy among heterosexual couples: individuals mate with their likes because many characteristics, such as education, consumption behaviour, desire to nurture children, religion, etc., exhibit strong complementarities in the household production function. However, because of asymmetries in the distributions of male and female characteristics, men and women may need to marry “up” or “down” according to the relative shortage of their characteristics among the populations of men and women. Yet, among homosexual couples, this limitation does not exist as partners are drawn from the same population, and thus the theory of assortative mating would boldly predict that individuals will choose a partner with nearly identical characteristics. Empirical evidence suggests a very different picture: a robust stylized fact is that the correlation of the characteristics is in fact weaker among the homosexual couples. In this paper, we build an equilibrium model of same-sex marriage market which allows for straightforward identification of the gains to marriage.
We estimate the model with 2008-2012 ACS data on California and show that positive assortative mating is weaker for homosexuals than for heterosexuals with respect to age and race. Yet, contrarily to previous empirical findings, our results suggest that positive assortative mating with respect to education is stronger among lesbians, and not significantly different when comparing gays and married different-sex couples. As regards labor market outcomes, such as hourly wages and working hours, we find some indications that the process of specialization within the household mainly applies to heterosexual couples.