Iranian Journal of Agricultural Economics and Development Research

Iranian Journal of Agricultural Economics and Development Research

A non-parametric Approach to Specifying Changes of Preferences German Consumers for the Iranian and U.S. Pistachios

Document Type : Research Paper

Authors
Habibollah Salami 1
Sohrab Sadafi Abkenar 2
1 Professor of Agricultural Economics, University of Tehran, College of Agriculture and Natural Resources, Tehran, Iran
2 Ph.D. Student of Agricultural Economics, University of Tehran, College of Agriculture and Natural Resources, Karaj, Iran
10.22059/ijaedr.2018.261600.668626
Abstract
Observing aflatoxin in Iranian pistachio from time to time and continuing substitution of U.S. pistachios instead of the Iranian one in the German market suggests that changes in the preferences of German consumers may have occurred against Iran's pistachios. The present study seeks to test this hypothesis. Given that, data on imports of pistachios from Iran and the United States during the period of 1988-2015 have been examined using a nonparametric approach based on the weak and strong axiom of revealed preferences. In addition, the K-W test has been used to test the significance of the observed violations. Results showed that, structural changes have occurred in the preferences of German consumers against Iranian pistachios. Additionally, the main reason for the observed preference changes roots in the health considerations by the German consumers. Hence, it would be difficult for Iranian exporters to regain the German market. Ensuring the continuity of healthy pistachio production and its guarantee by the official health authorities may help to restore the German market to Iranian pistachio exporters.
Keywords
Pistachio
Nonparametric approach
K-W Test
WARP
SARP
  1. Abdolahi, M. (2013). Study of market structure and factors affecting the demand for Iranian pistachio exports. MSc dissertation, University of Tehran, Iran. (In Farsi)
  2. Abdolahi ezat abadi, M. (2010). An Investigation of the Role of Aflatoxin in the Instability of Pistachio Market and Measuring wtp for Reducing Contamination. Iranian Journal of Agricultural Economics and Development Research, 2–41(2), 159–169. Retrieved from https://ijaedr.ut.ac.ir/article_22288.html. (In Farsi)
  3. Afriat, S. N. (1967). The Construction of Utility Functions from Expenditure Data. International Economic Review, 8(1), 67. https://doi.org/10.2307/2525382
  4. Bahmani-oskooee, M., & Brown, F. (2004). Kalman filter approach to estimate the demand for international reserves Kalman filter approach to estimate the demand for international reserves. Applied Economics, 36(15), 1655–1668. https://doi.org/10.1080/0003684042000218543
  5. Beach, R. H., Kuchler, F., Leibtag, E., & Zhen, C. (2008). The Effects of Avian Influenza News on Consumer Purchasing Behavior: A Case Study of Italian Consumers’ Retail Purchases (No. 56477). Economic Research Report. United States Department of Agriculture, Economic Research Service. Retrieved from https://ideas.repec.org/p/ags/uersrr/56477.html
  6. Bui-Klimke, T. R., Guclu, H., Kensler, T. W., Yuan, J. M., & Wu, F. (2014). Aflatoxin regulations and global pistachio trade: Insights from social network analysis. PLoS ONE, 9(3), 1–11. https://doi.org/10.1371/journal.pone.0092149
  7. Chalfant, J. A., & Alston, J. M. (1988). Accounting for Changes in Tastes. Journal of Political Economy, 96(2), 391–410. https://doi.org/10.1086/261543
  8. Chow, B., Dickinson, P., & Champagne, G. (1974). An Approximation of the Critical Values of the Kruskal-Wallis H-Test Using a Monte Carlo Sampling Technique. Journal of Quality Technology, 6(2), 95–97. https://doi.org/10.1080/00224065.1974.11980625
  9. Dashti, G., Khodaverdizadeh, M., & Mohammad Rezie, R. (2010). Analysis of Pistachio’s Comparative Advantages and Global Export Market Structure. Agricultural Economics & Development, 24(1), 99–106. https://doi.org/10.22067/JEAD2.V1389I1.3495. (In Farsi)
  10. FAO. (2017). Food and agriculture organization of the united nations. https://doi.org/10.1177/156482650302400401
  11. Farajzadeh, Z., & Bakhshoodeh, M. (2011). Studying Pistachio World Market Structure with Emphasis on Iranian Market Power. Egtesad-E Keshavarzi Va Towse,e, 19(73), 125–145. Retrieved from http://aead.agri-peri.ir/browse.php?a_code=A-10-24-110&slc_lang=en&sid=1. (In Farsi)
  12. Frechette, D. L., & Jin, H. J. (2002). Distinguishing transitory nonlinear shocks from permanent structural change. Structural Change and Economic Dynamics, 13(2), 231–248. https://doi.org/10.1016/S0954-349X(02)00005-X
  13. Gabriel, K. R., & Lachenbruch, P. A. (1969). 270 Note: Non-Parametric ANOVA in Small Samples: A Monte Carlo Study of the Adequacy of the Asymptotic Approximation. Biometrics, 25(3), 593. https://doi.org/10.2307/2528915
  14. Houthakker, H. S. (1950). Revealed Preference and the Utility Function. Economica, 17(66), 159. https://doi.org/10.2307/2549382
  15. Iman, R. L., & Davenport, J. M. (1976). New approximations to the exact distribution of the kruskal-wallis test statistic. Communications in Statistics - Theory and Methods, 5(14), 1335–1348. https://doi.org/10.1080/03610927608827446
  16. Jin, H. J. (2006). Verifying Timing and Frequency of Revealed Preference Violations and Application to the BSE Outbreak in Japan. Canadian Journal of Agricultural Economics, 54(1), 139–157. https://doi.org/10.1111/j.1744-7976.2006.00042.x
  17. Jin, H. J. (2008). Changes in South Korean consumers’ preferences for meat. Food Policy, 33(1), 74–84. https://doi.org/10.1016/j.foodpol.2007.05.004
  18. Jin, H. J., Sun, C., & Koo, W. W. (2003). The effect of the BSE outbreak in Japan on consumers’ preferences. European Review of Agriculture Economics, 30(2), 173–192. https://doi.org/10.1093/erae/30.2.173
  19. Kavoosi Kalashami, H., Kavoosi Kalashami, M., & Pakravan, M. R. (2015). Assessment of Structural Change in Iranian Municipal Consumers’ Preference for Edible Vegetable Oil. Agricultural Economics and Development, 22(88), 23–39. Retrieved from http://aead.sinaweb.net/article_58942.html. (In Farsi)
  20. Koo, A. Y. C. (1963). An Empirical Test of Revealed Preference Theory. Econometrica, 31(4), 646. https://doi.org/10.2307/1909164
  21. Koshteh, K. M., & Urutyan, V. E. (2003). Global Pistachio Production And Marketing Challenges. In CEA 37th Annual Meetings (pp. 1–20). Ottawa, Ontario: Carleton University. Retrieved from https://economics.ca/2003/directory.html
  22. Kruskal, W. H. (1952). A Nonparametric test for the Several Sample Problem. The Annals of Mathematical Statistics, 23(4), 525–540. https://doi.org/10.1214/aoms/1177729332
  23. Kruskal, W. H., & Wallis, W. A. (1952). Use of Ranks in One-Criterion Variance Analysis. Journal of the American Statistical Association, 47(260), 583–621. Retrieved from http://www.jstor.org/stable/2280779
  24. Mehrabi Basharabadi, H. (2002). Review of Factors Influencing Iran’s Share in The World Pistachio Market. Eqtesad-e Keshavarzi va Towse’e, 10(339), 85–102. Retrieved from http://www.sid.ir/En/Journal/ViewPaper.aspx?ID=23226. (In Farsi)
  25. Pastor-Bernier, A., Plott, C. R., & Schultz, W. (2017). Monkeys choose as if maximizing utility compatible with basic principles of revealed preference theory. Proceedings of the National Academy of Sciences, 114(10), E1766–E1775. https://doi.org/10.1073/pnas.1612010114
  26. Sakong, Y., & Hayes, D. J. (1993). Testing the Stability of Preferences: A Nonparametric Approach. American Journal of Agricultural Economics. https://doi.org/10.2307/1242911
  27. Salami, H., & Kavoosi Kalashami, M. (2011). Determination of Structural Change in Iranian Consumers Preferences’ for Rice Commodity Basket: WARP and K-W tests. Agricultural Economics & Development, 25(1), 90–99. https://doi.org/10.22067/jead2.v1390i1.8887. (In Farsi)
  28. Salami, H., Pakravan, M., & Kavoosi Kalashami, M. (2012). An Investigation of the Structural Change in Urban Iranian Consumers’ Preferences for Tea Using Nonparametric Revealed Preference Test. Iranian Journal of Agricultural Economics and Development Research, 43(3), 341–351. https://doi.org/10.22059/ijaedr.2012.30496. (In Farsi)
  29. Salami, H., & Tahami pour, M. (2012). An Investigation of Changes in Consumer Preferences for Red Vs. Poultry Meat in Iran (An Application of Non-Parametric Test). Iranian Journal of Agricultural Economics and Development Research, 43(2), 157–164. https://doi.org/10.22059/ijaedr.2012.30462. (In Farsi)
  30. Samuelson, P. (1938). A note on the pure theory of consumer’s behaviour: an addendum. Economica, 5(17), 61–71. https://doi.org/10.2307/2548836
  31. Spurrier, J. D. (2003). On the null distribution of the Kruskal–Wallis statistic. Journal of Nonparametric Statistics, 15(6), 685–691. https://doi.org/10.1080/10485250310001634719
  32. Ueda, T., & Frechette, D. L. (2002). Have Milk Fat Preferences Shifted? Structural Analysis of New York Milk Consumption. Agricultural and Resource Economics Review, 31(1), 71–83. Retrieved from http://search.proquest.com/docview/56067171?accountid=13042%5Cnhttp://oxfordsfx.hosted.exlibrisgroup.com/oxford?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&genre=article&sid=ProQ:ProQ:econlitshell&atitle=Have+Milk+Fat+Preferences+Shifted?
  33. Varian, H. R. (1982). Non-parametric methods in demand analysis. Economics Letters, 9, 23–29.
  34. Varian, H. R. (1983). Non-Parametric Tests of Consumer Behaviour. The Review of Economic Studies, 50(1), 99. https://doi.org/10.2307/2296957
  35. World Bank. (2017). World Integrated Trade Solution (WITS) | Data on Export, Import, Tariff, NTM. Retrieved from http://wits.worldbank.org/
Iranian Journal of Agricultural Economics and Development Research
Volume 50, Issue 1
Winter 2019
Pages 79-95