Wealth and Time Preference in Rural Ethiopia
This study measured the discount rates of a sample of 262 farm households in the Ethiopian highlands, using a time preference experiment with real payoffs. In general, the median discount rate was very high—more than double the interest rate on the outstanding debt—and varied systematically with wealth and risk aversion. Although we do not have a good theory for explaining the linkage between rates-of-time preferences (RTPs) and risk aversion, our findings warn that these two aspects of household behavior reinforce each other and are easily confused. Our results have important implications for understanding households’ behavior. Because the RTPs were so high, what might seem like profitable investments from the outside might not seem so from the farmers’ perspectives. Furthermore, when future returns were uncertain, risk-averse decision makers favored projects with shorter payback periods and were less willing to invest in projects with long-term benefits. Formal capital market development, including lending and mortgage markets—currently non-existent in most of rural Ethiopia—may help reduce RTPs and cause more investments to be acceptable. The results also suggested the need for more research on the linkages between risk aversion and RTPs in low-income countries.
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- Holden, Stein T. & Shiferaw, Bekele & Wik, Mette, 1998. "Poverty, market imperfections and time preferences: of relevance for environmental policy?," Environment and Development Economics, Cambridge University Press, vol. 3(01), pages 105-130, February.
- Moore, Michael J. & Viscusi, W. Kip, 1990. "Discounting environmental health risks: New evidence and policy implications," Journal of Environmental Economics and Management, Elsevier, vol. 18(2), pages 51-62, March.
- Pender, John L., 1996. "Discount rates and credit markets: Theory and evidence from rural india," Journal of Development Economics, Elsevier, vol. 50(2), pages 257-296, August.
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