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How General Are Time Preferences? Eliciting Good-Specific Discount Rates

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  • Ubfal, Diego

    (World Bank)

Abstract

This paper tests the broadly adopted assumption that people apply a single discount rate to the utility from different sources of consumption. Using unique data from two surveys conducted in rural Uganda including both hypothetical and real choices over different goods, the paper elicits time preferences from approximately 2,400 subjects. The data reject the null of equal discount rates across goods under a number of different modeling assumptions. These results have important theoretical and policy implications. For instance, they provide support for the idea that time-inconsistent behaviors and a corresponding demand for commitment can be observed even if individuals do not exhibit horizon-specific discounting. In addition, good-specific discounting, under certain conditions, can explain the persistence of poverty and low savings by the poor. The paper presents evidence that these conditions are satisfied in the context under study by showing that the share of expenditures on those goods with higher discount rates is decreasing with income.

Suggested Citation

  • Ubfal, Diego, 2012. "How General Are Time Preferences? Eliciting Good-Specific Discount Rates," IZA Discussion Papers 6774, Institute of Labor Economics (IZA).
  • Handle: RePEc:iza:izadps:dp6774
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    1. Andersen, Steffen & Harrison, Glenn W. & Lau, Morten I. & Rutström, E. Elisabet, 2014. "Discounting behavior: A reconsideration," European Economic Review, Elsevier, vol. 71(C), pages 15-33.
    2. Thomas Dohmen & Armin Falk & David Huffman & Uwe Sunde, 2010. "Are Risk Aversion and Impatience Related to Cognitive Ability?," American Economic Review, American Economic Association, vol. 100(3), pages 1238-1260, June.
    3. Fafchamps, Marcel & McKenzie, David & McKenzie, David & Quinn, Simon & Woodruff, Christopher, 2011. "When is capital enough to get female enterprises growing ? evidence from a randomized experiment in Ghana," Policy Research Working Paper Series 5706, The World Bank.
    4. David K. Levine & Drew Fudenberg, 2006. "A Dual-Self Model of Impulse Control," American Economic Review, American Economic Association, vol. 96(5), pages 1449-1476, December.
    5. Matthew Rabin & Ted O'Donoghue, 1999. "Doing It Now or Later," American Economic Review, American Economic Association, vol. 89(1), pages 103-124, March.
    6. Abhijit Banerjee & Sendhil Mullainathan, 2010. "The Shape of Temptation: Implications for the Economic Lives of the Poor," NBER Working Papers 15973, National Bureau of Economic Research, Inc.
    7. Gollier, Christian, 2010. "Ecological discounting," Journal of Economic Theory, Elsevier, vol. 145(2), pages 812-829, March.
    8. Charles Sprenger, 2015. "Judging Experimental Evidence on Dynamic Inconsistency," American Economic Review, American Economic Association, vol. 105(5), pages 280-285, May.
    9. Subramanian, Shankar & Deaton, Angus, 1996. "The Demand for Food and Calories," Journal of Political Economy, University of Chicago Press, vol. 104(1), pages 133-162, February.
    10. Susan Laury & Melayne McInnes & J. Todd Swarthout, 2012. "Avoiding the curves: Direct elicitation of time preferences," Journal of Risk and Uncertainty, Springer, vol. 44(3), pages 181-217, June.
    11. B. Douglas Bernheim & Debraj Ray & Şevin Yeltekin, 2015. "Poverty and Self‐Control," Econometrica, Econometric Society, vol. 83(5), pages 1877-1911, September.
    12. Cardenas, Juan Camilo & Carpenter, Jeffrey, 2013. "Risk attitudes and economic well-being in Latin America," Journal of Development Economics, Elsevier, vol. 103(C), pages 52-61.
    13. Ned Augenblick & Muriel Niederle & Charles Sprenger, 2015. "Editor's Choice Working over Time: Dynamic Inconsistency in Real Effort Tasks," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 130(3), pages 1067-1115.
    14. Krupka, Erin L. & Stephens, Melvin, 2013. "The stability of measured time preferences," Journal of Economic Behavior & Organization, Elsevier, vol. 85(C), pages 11-19.
    15. Harris, Christopher & Laibson, David, 2001. "Dynamic Choices of Hyperbolic Consumers," Econometrica, Econometric Society, vol. 69(4), pages 935-957, July.
    16. Orazio Attanasio & Erich Battistin & Alice Mesnard, 2012. "Food and Cash Transfers: Evidence from Colombia," Economic Journal, Royal Economic Society, vol. 122(559), pages 92-124, March.
    17. Azariadis, Costas & Stachurski, John, 2005. "Poverty Traps," Handbook of Economic Growth, in: Philippe Aghion & Steven Durlauf (ed.), Handbook of Economic Growth, edition 1, volume 1, chapter 5, Elsevier.
    18. Reuben, Ernesto & Sapienza, Paola & Zingales, Luigi, 2010. "Time discounting for primary and monetary rewards," Economics Letters, Elsevier, vol. 106(2), pages 125-127, February.
    19. Siwan Anderson & Jean-Marie Baland, 2002. "The Economics of Roscas and Intrahousehold Resource Allocation," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 117(3), pages 963-995.
    20. Pamela Jakiela & Owen Ozier, 2016. "Does Africa Need a Rotten Kin Theorem? Experimental Evidence from Village Economies," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 83(1), pages 231-268.
    21. Stefano DellaVigna, 2009. "Psychology and Economics: Evidence from the Field," Journal of Economic Literature, American Economic Association, vol. 47(2), pages 315-372, June.
    22. Abhijit V. Banerjee & Esther Duflo, 2007. "The Economic Lives of the Poor," Journal of Economic Perspectives, American Economic Association, vol. 21(1), pages 141-168, Winter.
    23. Takeo Hori & Koichi Futagami, 2019. "A Non‐unitary Discount Rate Model," Economica, London School of Economics and Political Science, vol. 86(341), pages 139-165, January.
    24. Pascaline Dupas & Jonathan Robinson, 2013. "Savings Constraints and Microenterprise Development: Evidence from a Field Experiment in Kenya," American Economic Journal: Applied Economics, American Economic Association, vol. 5(1), pages 163-192, January.
    25. Alexander L. Brown & Zhikang Eric Chua & Colin F. Camerer, 2009. "Learning and Visceral Temptation in Dynamic Saving Experiments," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 124(1), pages 197-231.
    26. Deaton, A. & Zaidi, S., 1999. "Guidelines for Constructing Consumption Aggregates for Welfare Analysis," Papers 192, Princeton, Woodrow Wilson School - Development Studies.
    27. 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, President and Fellows of Harvard College, vol. 121(2), pages 635-672.
    28. Noor, Jawwad, 2009. "Hyperbolic discounting and the standard model: Eliciting discount functions," Journal of Economic Theory, Elsevier, vol. 144(5), pages 2077-2083, September.
    29. Matthew Rabin & Georg Weizsacker, 2009. "Narrow Bracketing and Dominated Choices," American Economic Review, American Economic Association, vol. 99(4), pages 1508-1543, September.
    30. Michal Bauer & Julie Chytilova & Jonathan Morduch, 2012. "Behavioral Foundations of Microcredit: Experimental and Survey Evidence from Rural India," American Economic Review, American Economic Association, vol. 102(2), pages 1118-1139, April.
    31. Steffen Andersen & Glenn W. Harrison & Morten Lau & Elisabet E. Rutstroem, 2011. "Intertemporal Utility and Correlation Aversion," Working Papers 2011_03, Durham University Business School.
    32. Steffen Andersen & Glenn W. Harrison & Morten I. Lau & E. Elisabet Rutström, 2013. "Discounting Behaviour and the Magnitude Effect: Evidence from a Field Experiment in Denmark," Economica, London School of Economics and Political Science, vol. 80(320), pages 670-697, October.
    33. repec:ubc:pmicro:yoram_halevy-2012-19 is not listed on IDEAS
    34. Thaler, Richard H & Shefrin, H M, 1981. "An Economic Theory of Self-Control," Journal of Political Economy, University of Chicago Press, vol. 89(2), pages 392-406, April.
    35. James Andreoni & Michael A. Kuhn & Charles Sprenger, 2013. "On Measuring Time Preferences," NBER Working Papers 19392, National Bureau of Economic Research, Inc.
    36. José Luis Montiel Olea & Tomasz Strzalecki, 2014. "Axiomatization and Measurement of Quasi-Hyperbolic Discounting," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 129(3), pages 1449-1499.
    37. Quang Nguyen & Colin Camerer & Tomomi Tanaka, 2010. "Risk and Time Preferences Linking Experimental and Household Data from Vietnam," Post-Print halshs-00547090, HAL.
    38. Xavier Giné & Dean Karlan & Jonathan Zinman, 2010. "Put Your Money Where Your Butt Is: A Commitment Contract for Smoking Cessation," American Economic Journal: Applied Economics, American Economic Association, vol. 2(4), pages 213-235, October.
    39. 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(1), pages 105-130, February.
    40. Binswanger, Hans P, 1981. "Attitudes toward Risk: Theoretical Implications of an Experiment in Rural India," Economic Journal, Royal Economic Society, vol. 91(364), pages 867-890, December.
    41. Michal Bauer & Julie Chytilová, 2010. "The Impact of Education on Subjective Discount Rate in Ugandan Villages," Economic Development and Cultural Change, University of Chicago Press, vol. 58(4), pages 643-669, July.
    42. Gharad Bryan & Dean Karlan & Scott Nelson, 2010. "Commitment Devices," Annual Review of Economics, Annual Reviews, vol. 2(1), pages 671-698, September.
    43. James Andreoni & Charles Sprenger, 2012. "Estimating Time Preferences from Convex Budgets," American Economic Review, American Economic Association, vol. 102(7), pages 3333-3356, December.
    44. Abhijit Banerjee & Esther Duflo & Rachel Glennerster & Cynthia Kinnan, 2015. "The Miracle of Microfinance? Evidence from a Randomized Evaluation," American Economic Journal: Applied Economics, American Economic Association, vol. 7(1), pages 22-53, January.
    45. Pascaline Dupas & Jonathan Robinson, 2013. "Why Don't the Poor Save More? Evidence from Health Savings Experiments," American Economic Review, American Economic Association, vol. 103(4), pages 1138-1171, June.
    46. Maribeth Coller & Melonie Williams, 1999. "Eliciting Individual Discount Rates," Experimental Economics, Springer;Economic Science Association, vol. 2(2), pages 107-127, December.
    47. Traeger, Christian P., 2011. "Sustainability, limited substitutability, and non-constant social discount rates," Journal of Environmental Economics and Management, Elsevier, vol. 62(2), pages 215-228, September.
    48. Simone Schaner, 2015. "Do Opposites Detract? Intrahousehold Preference Heterogeneity and Inefficient Strategic Savings," American Economic Journal: Applied Economics, American Economic Association, vol. 7(2), pages 135-174, April.
    49. repec:pri:rpdevs:deaton_zaidi_consumption is not listed on IDEAS
    50. Esther Duflo & Michael Kremer & Jonathan Robinson, 2011. "Nudging Farmers to Use Fertilizer: Theory and Experimental Evidence from Kenya," American Economic Review, American Economic Association, vol. 101(6), pages 2350-2390, October.
    51. David Laibson, 1997. "Golden Eggs and Hyperbolic Discounting," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 112(2), pages 443-478.
    52. Robin Cubitt & Daniel Read, 2007. "Can intertemporal choice experiments elicit time preferences for consumption?," Experimental Economics, Springer;Economic Science Association, vol. 10(4), pages 369-389, December.
    53. Wilcox, Nathaniel T., 2011. "'Stochastically more risk averse:' A contextual theory of stochastic discrete choice under risk," Journal of Econometrics, Elsevier, vol. 162(1), pages 89-104, May.
    54. Mark Dean & Anja Sautmann, 2014. "Credit Constraints and the Measurement of Time Preferences," Working Papers 2014-1, Brown University, Department of Economics.
    55. Stephan Meier & Charles D. Sprenger, 2015. "Temporal Stability of Time Preferences," The Review of Economics and Statistics, MIT Press, vol. 97(2), pages 273-286, May.
    56. klemick, Heather & Yesuf, Mahmud, 2008. "Do Discount Rates Change over Time? Experimental Evidence from Ethiopia," RFF Working Paper Series dp-08-06-efd, Resources for the Future.
    57. Liran Einav & Amy Finkelstein & Iuliana Pascu & Mark R. Cullen, 2012. "How General Are Risk Preferences? Choices under Uncertainty in Different Domains," American Economic Review, American Economic Association, vol. 102(6), pages 2606-2638, October.
    58. Abbi Kedir & Sourafel Girma, 2007. "Quadratic Engel Curves with Measurement Error: Evidence from a Budget Survey," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 69(1), pages 123-138, February.
    59. Loewenstein, George, 1996. "Out of Control: Visceral Influences on Behavior," Organizational Behavior and Human Decision Processes, Elsevier, vol. 65(3), pages 272-292, March.
    60. R. H. Strotz, 1955. "Myopia and Inconsistency in Dynamic Utility Maximization," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 23(3), pages 165-180.
    61. Nava Ashraf, 2009. "Spousal Control and Intra-household Decision Making: An Experimental Study in the Philippines," American Economic Review, American Economic Association, vol. 99(4), pages 1245-1277, September.
    62. Steffen Andersen & Glenn W. Harrison & Morten I. Lau & E. Elisabet Rutström, 2008. "Eliciting Risk and Time Preferences," Econometrica, Econometric Society, vol. 76(3), pages 583-618, May.
    63. Leandro S. Carvalho & Stephan Meier & Stephanie W. Wang, 2016. "Poverty and Economic Decision-Making: Evidence from Changes in Financial Resources at Payday," American Economic Review, American Economic Association, vol. 106(2), pages 260-284, February.
    64. Brune, Lasse & Gine, Xavier & Goldberg, Jessica & Yang, Dean, 2011. "Commitments to save : a field experiment in rural Malawi," Policy Research Working Paper Series 5748, The World Bank.
    65. Lewbel, Arthur, 1996. "Demand Estimation with Expenditure Measurement Errors on the Left and Right Hand Side," The Review of Economics and Statistics, MIT Press, vol. 78(4), pages 718-725, November.
    66. Tomomi Tanaka & Colin F. Camerer & Quang Nguyen, 2010. "Risk and Time Preferences: Linking Experimental and Household Survey Data from Vietnam," American Economic Review, American Economic Association, vol. 100(1), pages 557-571, March.
    67. repec:cup:judgdm:v:5:y:2010:i:2:p:72-82 is not listed on IDEAS
    68. Moav, Omer & Neeman, Zvika, 2008. "Conspicuous Consumption, Human Capital and Poverty," CEPR Discussion Papers 6864, C.E.P.R. Discussion Papers.
    69. Robert T. Jensen & Nolan H. Miller, 2010. "A Revealed Preference Approach to Measuring Hunger and Undernutrition," NBER Working Papers 16555, National Bureau of Economic Research, Inc.
    70. Maribeth Coller & Glenn W. Harrison & E. Elisabet Rutström, 2012. "Latent process heterogeneity in discounting behavior," Oxford Economic Papers, Oxford University Press, vol. 64(2), pages 375-391, April.
    71. Steffen Andersen & Glenn W. Harrison & Morten Lau & Elisabet E. Rutstroem, 2011. "Discounting Behavior and the Magnitude Effect," Working Papers 2011_02, Durham University Business School.
    72. Siwan Anderson & Jean-Marie Baland, 2002. "The Economics of Roscas and Intrahousehold Resource Allocation," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 117(3), pages 963-995.
    73. 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.
    74. James Banks & Richard Blundell & Arthur Lewbel, 1997. "Quadratic Engel Curves And Consumer Demand," The Review of Economics and Statistics, MIT Press, vol. 79(4), pages 527-539, November.
    75. Yoram Halevy, 2015. "Time Consistency: Stationarity and Time Invariance," Econometrica, Econometric Society, vol. 83, pages 335-352, January.
    76. Shane Frederick & George Loewenstein & Ted O'Donoghue, 2002. "Time Discounting and Time Preference: A Critical Review," Journal of Economic Literature, American Economic Association, vol. 40(2), pages 351-401, June.
    77. Gretchen B. Chapman, 2002. "Your Money or Your Health: Time Preferences and Trading Money for Health," Medical Decision Making, , vol. 22(5), pages 410-416, October.
    78. Chuang, Yating & Schechter, Laura, 2015. "Stability of experimental and survey measures of risk, time, and social preferences: A review and some new results," Journal of Development Economics, Elsevier, vol. 117(C), pages 151-170.
    79. Benhabib, Jess & Bisin, Alberto & Schotter, Andrew, 2010. "Present-bias, quasi-hyperbolic discounting, and fixed costs," Games and Economic Behavior, Elsevier, vol. 69(2), pages 205-223, July.
    80. Carvalho, Leandro S. & Prina, Silvia & Sydnor, Justin, 2016. "The effect of saving on risk attitudes and intertemporal choices," Journal of Development Economics, Elsevier, vol. 120(C), pages 41-52.
    81. Victor Chernozhukov & Ivan Fernandez-Val & Amanda E. Kowalski, "undated". "Censored Quantile Instrumental Variable Estimation via Control Functions," Boston University - Department of Economics - Working Papers Series wp2009-012, Boston University - Department of Economics.
    82. Paul A. Samuelson, 1937. "A Note on Measurement of Utility," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 4(2), pages 155-161.
    83. Duquette, Eric & Higgins, Nathaniel & Horowitz, John, 2014. "Inferring discount rates from time-preference experiments," Economics Letters, Elsevier, vol. 123(2), pages 212-215.
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    More about this item

    Keywords

    time preferences; self-control problems; good-specific discounting; savings; poverty traps;
    All these keywords.

    JEL classification:

    • D01 - Microeconomics - - General - - - Microeconomic Behavior: Underlying Principles
    • D91 - Microeconomics - - Micro-Based Behavioral Economics - - - Role and Effects of Psychological, Emotional, Social, and Cognitive Factors on Decision Making
    • O1 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development

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