Do richer people have higher saving rates? The short‐run and long‐run consumption functions have different answers to this question, which results in the “consumption puzzle” that was a focus of macroeconomic research in the 1950s and 1960s. In a recent empirical contribution, Dynan, Skinner, and Zeldes (2004) revive this old question and make this “consumption puzzle” more intriguing, by showing that the average propensity to consume decreases not only with current income but also with lifetime income. This paper provides a model that helps resolve this puzzle from an intergenerational perspective.

This article analyzes the impacts of child labor on the interaction between the quantity and quality of children in the spirit of Becker and Lewis. It shows that, without child labor, the quantity of children can be a normal good so that it increases with parental income under some fairly standard formulations. However, the correlation between fertility and parental income becomes negative when the role of child labor is considered. The model also implies that fertility increases with the wage rate of child labor. Moreover, it suggests that government intervention not only directly affects the supply of child labor but also influences parents' decisions on fertility, which indirectly determines children's labor market participations.