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Do Changing Probabilities or Payoffs in Lottery-Choice Experiments Affect Risk Preference Outcomes? Evidence from Rural Uganda

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  • Ihli, Hanna Julia
  • Chiputwa, Brian
  • Musshoff, Oliver

Abstract

This study compares risk preferences elicited from two different methods and the resulting inconsistency rates in response behavior. We also identify and compare how demographic and socioeconomic characteristics influence risk preferences elicited from the two methods. We use experimental and survey data collected from 332 randomly selected smallholder coffee farmers in Uganda. We find relatively low inconsistency rates in the response behavior and that both methods classify most farmers as risk averse. However, a closer inspection reveals significantly different risk results. Specific demographic and socioeconomic characteristics affect farmers’ risk preferences but are not stable across elicitation methods.

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  • Ihli, Hanna Julia & Chiputwa, Brian & Musshoff, Oliver, 2016. "Do Changing Probabilities or Payoffs in Lottery-Choice Experiments Affect Risk Preference Outcomes? Evidence from Rural Uganda," Journal of Agricultural and Resource Economics, Western Agricultural Economics Association, vol. 41(2), May.
    • Handle: RePEc:ags:jlaare:235193
    DOI: 10.22004/ag.econ.235193
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    as
    1. Luisa Menapace & Gregory Colson & Roberta Raffaelli, 2013. "Risk Aversion, Subjective Beliefs, and Farmer Risk Management Strategies," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 95(2), pages 384-389.
    2. Alma Cohen & Liran Einav, 2007. "Estimating Risk Preferences from Deductible Choice," American Economic Review, American Economic Association, vol. 97(3), pages 745-788, June.
    3. Glenn W. Harrison & Morten I. Lau & E. Elisabet Rutström, 2007. "Estimating Risk Attitudes in Denmark: A Field Experiment," Scandinavian Journal of Economics, Wiley Blackwell, vol. 109(2), pages 341-368, June.
    4. Fafchamps, Marcel & Lund, Susan, 2003. "Risk-sharing networks in rural Philippines," Journal of Development Economics, Elsevier, vol. 71(2), pages 261-287, August.
    5. Uri Gneezy & Jan Potters, 1997. "An Experiment on Risk Taking and Evaluation Periods," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 112(2), pages 631-645.
    6. Catherine C. Eckel & Philip J. Grossman, 2008. "Forecasting Risk Attitudes: An Experimental Study Using Actual and Forecast Gamble Choices," Monash Economics Working Papers archive-01, Monash University, Department of Economics.
    7. Charles R. Plott & Kathryn Zeiler, 2007. "Exchange Asymmetries Incorrectly Interpreted as Evidence of Endowment Effect Theory and Prospect Theory?," American Economic Review, American Economic Association, vol. 97(4), pages 1449-1466, September.
    8. Masclet, David & Colombier, Nathalie & Denant-Boemont, Laurent & Lohéac, Youenn, 2009. "Group and individual risk preferences: A lottery-choice experiment with self-employed and salaried workers," Journal of Economic Behavior & Organization, Elsevier, vol. 70(3), pages 470-484, June.
    9. Kahneman, Daniel & Knetsch, Jack L & Thaler, Richard H, 1990. "Experimental Tests of the Endowment Effect and the Coase Theorem," Journal of Political Economy, University of Chicago Press, vol. 98(6), pages 1325-1348, December.
    10. Catherine C. Eckel & Philip J. Grossman, 2002. "Sex Differences and Statistical Stereotyping in Attitudes Toward Financial Risk," Monash Economics Working Papers archive-03, Monash University, Department of Economics.
    11. Arnaud Reynaud & Stéphane Couture, 2012. "Stability of risk preference measures: results from a field experiment on French farmers," Theory and Decision, Springer, vol. 73(2), pages 203-221, August.
    12. Galarza, Francisco, 2009. "Choices under Risk in Rural Peru," MPRA Paper 17708, University Library of Munich, Germany.
    13. Thomas Dohmen & Armin Falk & David Huffman & Uwe Sunde & Jürgen Schupp & Gert G. Wagner, 2011. "Individual Risk Attitudes: Measurement, Determinants, And Behavioral Consequences," Journal of the European Economic Association, European Economic Association, vol. 9(3), pages 522-550, June.
    14. Steven D. Levitt & John A. List, 2007. "What Do Laboratory Experiments Measuring Social Preferences Reveal About the Real World?," Journal of Economic Perspectives, American Economic Association, vol. 21(2), pages 153-174, Spring.
    15. Starmer, Chris & Sugden, Robert, 1989. "Probability and Juxtaposition Effects: An Experimental Investigation of the Common Ratio Effect," Journal of Risk and Uncertainty, Springer, vol. 2(2), pages 159-178, June.
    16. Steer, Liesbet & Sen, Kunal, 2010. "Formal and Informal Institutions in a Transition Economy: The Case of Vietnam," World Development, Elsevier, vol. 38(11), pages 1603-1615, November.
    17. Brian E. Roe & David R. Just, 2009. "Internal and External Validity in Economics Research: Tradeoffs between Experiments, Field Experiments, Natural Experiments, and Field Data," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 91(5), pages 1266-1271.
    18. Feder, Gershon & Just, Richard E & Zilberman, David, 1985. "Adoption of Agricultural Innovations in Developing Countries: A Survey," Economic Development and Cultural Change, University of Chicago Press, vol. 33(2), pages 255-298, January.
    19. Chiputwa, Brian & Spielman, David J. & Qaim, Matin, 2015. "Food Standards, Certification, and Poverty among Coffee Farmers in Uganda," World Development, Elsevier, vol. 66(C), pages 400-412.
    20. Wu, George, 1994. "An Empirical Test of Ordinal Independence," Journal of Risk and Uncertainty, Springer, vol. 9(1), pages 39-60, July.
    21. Glenn W. Harrison, 2011. "Experimental methods and the welfare evaluation of policy lotteries," European Review of Agricultural Economics, Oxford University Press and the European Agricultural and Applied Economics Publications Foundation, vol. 38(3), pages 335-360, August.
    22. Mahmud Yesuf & Randall A. Bluffstone, 2009. "Poverty, Risk Aversion, and Path Dependence in Low-Income Countries: Experimental Evidence from Ethiopia," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 91(4), pages 1022-1037.
    23. Elaine M. Liu, 2013. "Time to Change What to Sow: Risk Preferences and Technology Adoption Decisions of Cotton Farmers in China," The Review of Economics and Statistics, MIT Press, vol. 95(4), pages 1386-1403, October.
    24. Doss, Cheryl & McPeak, John & Barrett, Christopher B., 2008. "Interpersonal, Intertemporal and Spatial Variation in Risk Perceptions: Evidence from East Africa," World Development, Elsevier, vol. 36(8), pages 1453-1468, August.
    25. Thea Nielsen & Alwin Keil & Manfred Zeller, 2013. "Assessing farmers’ risk preferences and their determinants in a marginal upland area of Vietnam: a comparison of multiple elicitation techniques," Agricultural Economics, International Association of Agricultural Economists, vol. 44(3), pages 255-273, May.
    26. Maart-Noelck, Syster C. & Musshoff, Oliver, 2014. "Measuring the risk attitude of decision-makers: are there differences between groups of methods and persons?," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 58(3), July.
    27. Ruth Hill & Angelino Viceisza, 2012. "A field experiment on the impact of weather shocks and insurance on risky investment," Experimental Economics, Springer;Economic Science Association, vol. 15(2), pages 341-371, June.
    28. Orazio Attanasio & Abigail Barr & Juan Camilo Cardenas & Garance Genicot & Costas Meghir, 2012. "Risk Pooling, Risk Preferences, and Social Networks," American Economic Journal: Applied Economics, American Economic Association, vol. 4(2), pages 134-167, April.
    29. Engle Warnick James C. & Escobal Javier & Laszlo Sonia C., 2011. "Ambiguity Aversion and Portfolio Choice in Small-Scale Peruvian Farming," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 11(1), pages 1-56, November.
    30. Daniel Kahneman & Amos Tversky, 2013. "Prospect Theory: An Analysis of Decision Under Risk," World Scientific Book Chapters, in: Leonard C MacLean & William T Ziemba (ed.), HANDBOOK OF THE FUNDAMENTALS OF FINANCIAL DECISION MAKING Part I, chapter 6, pages 99-127, World Scientific Publishing Co. Pte. Ltd..
    31. Price, T. Jeffrey & Wetzstein, Michael E., 1999. "Irreversible Investment Decisions In Perennial Crops With Yield And Price Uncertainty," Journal of Agricultural and Resource Economics, Western Agricultural Economics Association, vol. 24(1), pages 1-13, July.
    32. Camerer, Colin F & Hogarth, Robin M, 1999. "The Effects of Financial Incentives in Experiments: A Review and Capital-Labor-Production Framework," Journal of Risk and Uncertainty, Springer, vol. 19(1-3), pages 7-42, December.
    33. Rachel Croson & Uri Gneezy, 2009. "Gender Differences in Preferences," Journal of Economic Literature, American Economic Association, vol. 47(2), pages 448-474, June.
    34. Hans P. Binswanger, 1980. "Attitudes Toward Risk: Experimental Measurement in Rural India," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 62(3), pages 395-407.
    35. Chetan Dave & Catherine Eckel & Cathleen Johnson & Christian Rojas, 2010. "Eliciting risk preferences: When is simple better?," Journal of Risk and Uncertainty, Springer, vol. 41(3), pages 219-243, December.
    36. Goeree, Jacob K. & Holt, Charles A. & Laury, Susan K., 2002. "Private costs and public benefits: unraveling the effects of altruism and noisy behavior," Journal of Public Economics, Elsevier, vol. 83(2), pages 255-276, February.
    37. Charles A. Holt & Susan K. Laury, 2002. "Risk Aversion and Incentive Effects," American Economic Review, American Economic Association, vol. 92(5), pages 1644-1655, December.
    38. de Brauw, Alan & Eozenou, Patrick, 2014. "Measuring risk attitudes among Mozambican farmers," Journal of Development Economics, Elsevier, vol. 111(C), pages 61-74.
    39. Jean-Paul Chavas & Robert G. Chambers & Rulon D. Pope, 2010. "Production Economics and Farm Management: a Century of Contributions," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 92(2), pages 356-375.
    40. Lisa Anderson & Jennifer Mellor, 2009. "Are risk preferences stable? Comparing an experimental measure with a validated survey-based measure," Journal of Risk and Uncertainty, Springer, vol. 39(2), pages 137-160, October.
    41. repec:feb:artefa:0092 is not listed on IDEAS
    42. Norbert Hirschauer & Oliver Musshoff & Syster C. Maart-Noelck & Sven Gruener, 2014. "Eliciting risk attitudes -- how to avoid mean and variance bias in Holt-and-Laury lotteries," Applied Economics Letters, Taylor & Francis Journals, vol. 21(1), pages 35-38, January.
    43. Quang Nguyen & Colin Camerer & Tomomi Tanaka, 2010. "Risk and Time Preferences Linking Experimental and Household Data from Vietnam," Post-Print halshs-00547090, HAL.
    44. Bhattamishra, Ruchira & Barrett, Christopher B., 2010. "Community-Based Risk Management Arrangements: A Review," World Development, Elsevier, vol. 38(7), pages 923-932, July.
    45. Marra, Michele & Pannell, David J. & Abadi Ghadim, Amir, 2003. "The economics of risk, uncertainty and learning in the adoption of new agricultural technologies: where are we on the learning curve?," Agricultural Systems, Elsevier, vol. 75(2-3), pages 215-234.
    46. Houser, Daniel & Schunk, Daniel & Winter, Joachim, 2010. "Distinguishing trust from risk: An anatomy of the investment game," Journal of Economic Behavior & Organization, Elsevier, vol. 74(1-2), pages 72-81, May.
    47. Charness, Gary & Viceisza, Angelino, 2016. "Three Risk-elicitation Methods in the Field - Evidence from Rural Senegal," Review of Behavioral Economics, now publishers, vol. 3(2), pages 145-171, July.
    48. Alex Winter-Nelson & Koffi Amegbeto, 1998. "Option Values to Conservation and Agricultural Price Policy: Application to Terrace Construction in Kenya," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 80(2), pages 409-418.
    49. Harless, David W & Camerer, Colin F, 1994. "The Predictive Utility of Generalized Expected Utility Theories," Econometrica, Econometric Society, vol. 62(6), pages 1251-1289, November.
    50. 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.
    51. Mette Wik & Tewodros Aragie Kebede & Olvar Bergland & Stein Holden, 2004. "On the measurement of risk aversion from experimental data," Applied Economics, Taylor & Francis Journals, vol. 36(21), pages 2443-2451.
    52. Sarah Jacobson & Ragan Petrie, 2009. "Learning from mistakes: What do inconsistent choices over risk tell us?," Journal of Risk and Uncertainty, Springer, vol. 38(2), pages 143-158, April.
    53. Hakan J. Holm & Sonja Opper & Victor Nee, 2013. "Entrepreneurs Under Uncertainty: An Economic Experiment in China," Management Science, INFORMS, vol. 59(7), pages 1671-1687, July.
    54. Steven J. Humphrey & Arjan Verschoor, 2004. "Decision-making Under Risk among Small Farmers in East Uganda," Journal of African Economies, Centre for the Study of African Economies, vol. 13(1), pages 44-101, March.
    55. Bolle, Friedel, 1990. "High reward experiments without high expenditure for the experimenter?," Journal of Economic Psychology, Elsevier, vol. 11(2), pages 157-167, June.
    56. GlennW. Harrison & StevenJ. Humphrey & Arjan Verschoor, 2010. "Choice under Uncertainty: Evidence from Ethiopia, India and Uganda," Economic Journal, Royal Economic Society, vol. 120(543), pages 80-104, March.
    57. Hurley, Terrance M., 2010. "A review of agricultural production risk in the developing world," Working Papers 188476, HarvestChoice.
    58. Mohammed Abdellaoui & Ahmed Driouchi & Olivier L’Haridon, 2011. "Risk aversion elicitation: reconciling tractability and bias minimization," Theory and Decision, Springer, vol. 71(1), pages 63-80, July.
    59. James Andreoni & John Miller, 2002. "Giving According to GARP: An Experimental Test of the Consistency of Preferences for Altruism," Econometrica, Econometric Society, vol. 70(2), pages 737-753, March.
    60. Eswaran, Mukesh & Kotwal, Ashok, 1990. "Implications of Credit Constraints for Risk Behaviour in Less Developed Economies," Oxford Economic Papers, Oxford University Press, vol. 42(2), pages 473-482, April.
    61. Kerri Brick & Martine Visser & Justine Burns, 2012. "Risk Aversion: Experimental Evidence from South African Fishing Communities," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 94(1), pages 133-152.
    62. Amy Purvis & William G. Boggess & Charles B. Moss & John Holt, 1995. "Technology Adoption Decisions under Irreversibility and Uncertainty: An Ex Ante Appproach," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 77(3), pages 541-551.
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