Why Don't the Poor Save More? Evidence from Health Savings Experiments

Working Paper: NBER ID: w17255

Authors: Pascaline Dupas; Jonathan Robinson

Abstract: Using data from a field experiment in Kenya, we document that providing individuals with simple informal savings technologies can substantially increase investment in preventative health and reduce vulnerability to health shocks. Simply providing a safe place to keep money was sufficient to increase health savings, through a mental accounting effect. Adding an earmarking feature was only helpful when funds were put towards emergencies; earmarking for preventative health reduced savings on average, because the liquidity cost of tying up money was too great. Providing social pressure and credit through a ROSCA-based savings scheme had very large effects.

Keywords: savings; health investments; field experiment; developing countries; mental accounting

JEL Codes: D14; D91; O16


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
safe box (D14)preventative health investments (I14)
health pot (I19)preventative health investments (I14)
lockbox (Y60)preventative health investments (I14)
health savings account (HSA) (I13)likelihood of being unable to afford medical care (I13)
present-biased individuals (D91)need for stronger commitment mechanisms (D47)
married women (J12)benefit from savings technologies (Q55)

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