Parental Time Investment and Intergenerational Mobility

63 Pages Posted: 10 Jun 2021 Last revised: 14 Jul 2022

See all articles by Minchul Yum

Minchul Yum

University of Southampton; CEPR

Date Written: July 13, 2022


This paper constructs an overlapping generations general equilibrium model to explore the extent to which heterogeneity in time investment shapes intergenerational mobility of lifetime income. The calibrated model successfully accounts for untargeted distributional aspects of income mobility, which are captured in the income quintile transition matrix. Counterfactual exercises show that removing heterogeneity in parental time investment reduces intergenerational persistence by around 7-8% for early childhood but only marginally in later childhood. Since parental time and monetary investments are poor substitutes for human capital development in early childhood, parental time investment during this period serves as a mechanism that amplifies the transmission of the parents' economic status to their children. Policy experiments find that an asset-tested subsidy for parental monetary investments in early childhood can raise intergenerational mobility in a cost-effective way, though it reduces mobility substantially if given to parents with older school-aged children.

Keywords: Intergenerational elasticity, quintile transition matrix, parental investments, college education

JEL Classification: E24, I24, J22

Suggested Citation

Yum, Minchul, Parental Time Investment and Intergenerational Mobility (July 13, 2022). Available at SSRN: or

Minchul Yum (Contact Author)

University of Southampton ( email )

United Kingdom

CEPR ( email )

United Kingdom

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