Social Emulation, the Evolution of Gender Norms, and Intergenerational Transfers; Three Essays on the Economics of Social Interactions Seung-Yun Oh Abstract In this dissertation, I develop theoretical models of the role of social interactions, the evolution of social norms, and their impact on individual behavior. Although my models are consistent with individual utility maximization, they generally emphasize social factors that channel individual decisions and/or shape individuals’ preferences. I apply this approach to three different issues: labor supply, fertility decisions, and intergenerational transfers, generating predictions that are more consistent with observed empirical patterns of behavior than standard neoclassical approaches that assume independent preferences, perfect information, and efficient markets. In the first essay, “Social Emulation and the Determination of Working Hours”, I develop a model of determination of working hours under the influence of individuals’ emulation of the conspicuous consumption of the rich. Individuals care about their consumption relative to others, and a desire to emulate the consumption standard of the rich influences individuals’ allocation of time. The model differs from conventional labor supply theory in that workers choose freely their working hours, considering the trade-off between consumption and leisure. In the model, hours are determined by employers (not by employees) and are subject to complete contracts, but employees’ work effort is not. This provides a more realistic explanation of the determination of working hours and possible conflict over hours between workers and employers. The result shows that the increase in top income share increases the gap between the consumption levels of an individual and the reference group, which reduces the individuals’ effective consumption. This, in turn, raises the marginal utility of consumption relative to the marginal disutility of working hours and induces workers to prefer more hours, given the wage. Employers offer longer hours in response to changes in workers’ preferences. The result provides a connection between the increases in income inequality and longer working hours. The second essay, “The Evolution of Gender Norms, Division of Labor and Fertility”, addresses the puzzle of a new pattern of positive correlation between fertility rates and female labor force participation revealed among developed countries since late 1980s. This recent trend seems inconsistent with conventional economic approaches that explain fertility decline as a result of the increasing opportunity costs of childrearing, predicting a negative correlation between fertility and women’s labor force participation. To address the puzzle, I develop a model of the evolution of gender norms and fertility in various economic environments influenced by the level of women’s wages and publicly-provided childcare. Randomly matched spouses make choices regarding women’s labor supply and the division of household labor based on their preferences shaped by gender norms, which determine fertility. In the model, norm updating is influenced by both within-family payoffs and conformism payoffs from social interactions among the same sex. The model shows how changes in economic environments and the degree of conformism towards each norm can alter preferences and fertility outcomes. When women’s wages are very low, all men and women conform to traditional "separate spheres" gender norms and have fertility well above replacement rates. However, if women’s wages are sufficiently high, women adopt an egalitarian "shared care" norm and engage in market work. If the cost of childrearing is sufficiently low, men also adopt a "shared care" norm, and couples achieve replacement levels of fertility. However, the presence and strength of conformism modify these outcomes. If men strongly conform to

traditional gender norms, then normative differences generate differences in preferences among spouses that lead to below-replacement fertility. The results suggest that the asymmetric evolution of gender norms between men and women could contribute to very low fertility, providing an explanation for the puzzle of the positive relation between fertility and women’s labor force participation. In the third essay, “Do Public Transfers Crowd Out Private Support to the Elderly?: Evidence from a Basic Old Age Pension in Korea”, I estimate the effect of the exogenously introduced public pensions to the elderly on the amount of private transfers they receive. There has been a long debate whether public transfers crowd out private transfers. The previous empirical studies on this issue, which use policy experiments in reducedform estimations, suffer from the endogeneity of income that contaminates estimates. The advantages of using Korean Basic Old Age Pension data collected by KReIS(Korean retirement and income study) are twofold: i) it is a panel data, so we can measure the crowding out effect on individuals more precisely; ii) conditional on pension eligibility, 94% of recipients are paid fixed amount of the pension regardless of their income level, which can overcome the endogeneity problem. I employ Difference in Difference (DID) method and the result shows that the reduction in private transfers for the pensioners is less than that of non-pensioners. According to the income distribution of the elderly in Korea, the pension covers the bottom 60% of the whole elderly population over 65 years old in 2008. Considering the fact that pensioners are poorer than non-pensioners, the private transfers to pensioners are more likely to be motivated by altruism. The result casts doubt on the crowding out effect of public pensions under pure altruistic motivation. It rather suggests that the private transfers to the elderly tend to be motivated by “warm glow giving”, filial social norms, or the “demonstrate effect”, which support the distributional role of the pension.

Social Emulation, the Evolution of Gender Norms, and ...

Abstract. In this dissertation, I develop theoretical models of the role of social ... In the third essay, “Do Public Transfers Crowd Out Private Support to the Elderly?:

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