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Household Decision Making and Savings Impacts: Further Evidence from a Commitment Savings Product in the Philippines

  • Nava Ashraf


    (Harvard Business School)

  • Dean Karlan


    (Economic Growth Center, Yale University)

  • Wesley Yin


    (University of Chicago)

Registered author(s):

    Commitment devices for savings could benefit those with self-control as well as familial or spousal control issues. We find evidence to support both motivations. We examine the impact of a commitment savings product in the Philippines on household decision making power and self-perception of savings behavior, as well as actual savings. The product leads to more decision making power in the household for women, and likewise more purchases of female-oriented durable goods. We also find that the product leads women who appear time-inconsistent in a baseline survey to self-report being a disciplined saver in the follow-up survey. For impact on savings balances, we find that the 81% increase in savings after one year did not crowd out savings held outside of the participating bank, but that the longer-term impact over two and a half years on bank savings dissipated to only a 33% increase, which is no longer statistically significant. We discuss reasons why the effect dissipated and the implications for designing and implementing sustainable, equilibrium-shifting interventions.

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    Paper provided by Economic Growth Center, Yale University in its series Working Papers with number 939.

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    Length: 27 pages
    Date of creation: Jun 2006
    Date of revision:
    Handle: RePEc:egc:wpaper:939
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    1. Esther Duflo & William Gale & Jeffrey Liebman & Peter Orszag & Emmanuel Saez, 2006. "Saving Incentives for Low- and Middle-Income Families: Evidence from a Field Experiment with H&R Block," The Quarterly Journal of Economics, MIT Press, vol. 121(4), pages 1311-1346, November.
    2. Nava Ashraf & Dean Karlan & Wesley Yin, 2006. "Tying Odysseus to the Mast: Evidence from a Commitment Savings Product in the Philippines," The Quarterly Journal of Economics, MIT Press, vol. 121(2), pages 635-672, May.
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