Optimal Financial Knowledge and Wealth Inequality. Lusardi, A., Michaud, P., & Mitchell, O. S. Journal of Political Economy, 125(2):431–477, 2017.
Optimal Financial Knowledge and Wealth Inequality [link]Link  doi  abstract   bibtex   
We show that financial knowledge is a key determinant of wealth inequality in a stochastic life cycle model with endogenous financial knowledge accumulation, where financial knowledge enables individuals to better allocate lifetime resources in a world of uncertainty and imperfect insurance. Moreover, because of how the US social insurance system works, better-educated individuals have most to gain from investing in financial knowledge. Our parsimonious specification generates substantial wealth inequality relative to a one-asset saving model and one in which returns on wealth depend on portfolio composition alone. We estimate that 30– 40 percent of retirement wealth inequality is accounted for by financial knowledge.
@article{Lusardietal2017,
  title = {Optimal Financial Knowledge and Wealth Inequality},
  author = {Lusardi, Annamaria and Michaud, Pierre-Carl and Mitchell, Olivia S.},
  year = {2017},
  journal = {Journal of Political Economy},
  volume = {125},
  number = {2},
  pages = {431--477},
  doi = {10.1086/690950},
  url = {https://www.journals.uchicago.edu/doi/10.1086/690950},
  abstract = {We show that financial knowledge is a key determinant of wealth inequality in a stochastic life cycle model with endogenous financial knowledge accumulation, where financial knowledge enables individuals to better allocate lifetime resources in a world of uncertainty and imperfect insurance. Moreover, because of how the US social insurance system works, better-educated individuals have most to gain from investing in financial knowledge. Our parsimonious specification generates substantial wealth inequality relative to a one-asset saving model and one in which returns on wealth depend on portfolio composition alone. We estimate that 30\textendash 40 percent of retirement wealth inequality is accounted for by financial knowledge.},
  keywords = {Determinants of Wealth and Wealth Inequality}
}

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