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Being a happy farmer: Technology adoption and subjective well-being

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  • Liu, Yan
  • Chen, Minjie
  • Yu, Jianyu
  • Wang, Xiaobing

Abstract

This paper empirically investigates the impact of technology adoption on farmers’ subjective well-being, as measured by happiness and life satisfaction. A theoretical framework is constructed to link farmers’ subjective well-being to technology adoption, with a particular emphasis on mechanization services in agricultural production. By fitting a nationally representative panel dataset – China Family Panel Studies – into an endogenous switching regression model that addresses potential selection bias, we find that technology adoption leads to a 0.194 standard deviation increase in happiness and a 0.065 standard deviation increase in life satisfaction. Further analysis reveals that the effect is more pronounced for individuals engaged in off-farm employment and varies across farm sizes. To underpin the causal effect, we test three plausible mechanisms – absolute income, relative income, and leisure – which are well-documented in the literature for their correlations with happiness and life satisfaction. Our empirical analysis indicates that the adoption of agricultural mechanization services indeed increases the absolute income of farmers and allows them to allocate more time to leisure activities.

Suggested Citation

  • Liu, Yan & Chen, Minjie & Yu, Jianyu & Wang, Xiaobing, 2024. "Being a happy farmer: Technology adoption and subjective well-being," Journal of Economic Behavior & Organization, Elsevier, vol. 221(C), pages 385-405.
  • Handle: RePEc:eee:jeborg:v:221:y:2024:i:c:p:385-405
    DOI: 10.1016/j.jebo.2024.03.028
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    1. Yao Pan & Stephen C Smith & Munshi Sulaiman, 2018. "Agricultural Extension and Technology Adoption for Food Security: Evidence from Uganda," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 100(4), pages 1012-1031.
    2. Fafchamps, Marcel & Shilpi, Forhad, 2008. "Subjective welfare, isolation, and relative consumption," Journal of Development Economics, Elsevier, vol. 86(1), pages 43-60, April.
    3. Sheng, Yu & Chancellor, Will, 2019. "Exploring the relationship between farm size and productivity: Evidence from the Australian grains industry," Food Policy, Elsevier, vol. 84(C), pages 196-204.
    4. Birkhaeuser, Dean & Evenson, Robert E & Feder, Gershon, 1991. "The Economic Impact of Agricultural Extension: A Review," Economic Development and Cultural Change, University of Chicago Press, vol. 39(3), pages 607-650, April.
    5. AndrewE. Clark & Claudia Senik, 2010. "Who Compares to Whom? The Anatomy of Income Comparisons in Europe," Economic Journal, Royal Economic Society, vol. 120(544), pages 573-594, May.
    6. Singh, Pallavi & Bala, Hillol & Dey, Bidit Lal & Filieri, Raffaele, 2022. "Enforced remote working: The impact of digital platform-induced stress and remote working experience on technology exhaustion and subjective wellbeing," Journal of Business Research, Elsevier, vol. 151(C), pages 269-286.
    7. Kislev, Yoav & Peterson, Willis, 1982. "Prices, Technology, and Farm Size," Journal of Political Economy, University of Chicago Press, vol. 90(3), pages 578-595, June.
    8. Jikun Huang & Jiping Ding, 2016. "Institutional innovation and policy support to facilitate small-scale farming transformation in China," Agricultural Economics, International Association of Agricultural Economists, vol. 47(S1), pages 227-237, November.
    9. Kavetsos, Georgios & Koutroumpis, Pantelis, 2011. "Technological affluence and subjective well-being," Journal of Economic Psychology, Elsevier, vol. 32(5), pages 742-753.
    10. Victor Chernozhukov & Christian Hansen & Martin Spindler, 2015. "Post-Selection and Post-Regularization Inference in Linear Models with Many Controls and Instruments," American Economic Review, American Economic Association, vol. 105(5), pages 486-490, May.
    11. Bruno S. Frey & Alois Stutzer, 2010. "Happiness: A New Approach in Economics," ifo DICE Report, ifo Institute - Leibniz Institute for Economic Research at the University of Munich, vol. 8(4), pages 3-7, 01.
    12. Peter Howley, 2015. "The Happy Farmer: The Effect of Nonpecuniary Benefits on Behavior," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 97(4), pages 1072-1086.
    13. Emily Oster, 2019. "Unobservable Selection and Coefficient Stability: Theory and Evidence," Journal of Business & Economic Statistics, Taylor & Francis Journals, vol. 37(2), pages 187-204, April.
    14. Erzo F. P. Luttmer, 2005. "Neighbors as Negatives: Relative Earnings and Well-Being," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 120(3), pages 963-1002.
    15. Wang, Xiaobing & Yamauchi, Futoshi & Otsuka, Keijiro & Huang, Jikun, 2016. "Wage Growth, Landholding, and Mechanization in Chinese Agriculture," World Development, Elsevier, vol. 86(C), pages 30-45.
    16. 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.
    17. Alexandre Belloni & Victor Chernozhukov & Christian Hansen, 2014. "Inference on Treatment Effects after Selection among High-Dimensional Controlsâ€," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 81(2), pages 608-650.
    18. Weifeng Zhang & Guoxin Cao & Xiaolin Li & Hongyan Zhang & Chong Wang & Quanqing Liu & Xinping Chen & Zhenling Cui & Jianbo Shen & Rongfeng Jiang & Guohua Mi & Yuxin Miao & Fusuo Zhang & Zhengxia Dou, 2016. "Closing yield gaps in China by empowering smallholder farmers," Nature, Nature, vol. 537(7622), pages 671-674, September.
    19. Erik Lindqvist & Robert Östling & David Cesarini, 2020. "Long-Run Effects of Lottery Wealth on Psychological Well-Being," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 87(6), pages 2703-2726.
    20. Jan-Emmanuel De Neve & James H. Fowler & Bruno S. Frey, 2010. "Genes, economics, and happiness," IEW - Working Papers 475, Institute for Empirical Research in Economics - University of Zurich.
    21. Aart Gerritsen & Bas Jacobs, 2020. "Is a Minimum Wage an Appropriate Instrument for Redistribution?," Economica, London School of Economics and Political Science, vol. 87(347), pages 611-637, July.
    22. Jin Yang & Zuhui Huang & Xiaobo Zhang & Thomas Reardon, 2013. "The Rapid Rise of Cross-Regional Agricultural Mechanization Services in China," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 95(5), pages 1245-1251.
    23. Ed Diener & Robert Biswas-Diener, 2002. "Will Money Increase Subjective Well-Being?," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 57(2), pages 119-169, February.
    24. Daniel J. Benjamin & Ori Heffetz & Miles S. Kimball & Alex Rees-Jones, 2012. "What Do You Think Would Make You Happier? What Do You Think You Would Choose?," American Economic Review, American Economic Association, vol. 102(5), pages 2083-2110, August.
    25. Shanker Satyanath & Nico Voigtländer & Hans-Joachim Voth, 2017. "Bowling for Fascism: Social Capital and the Rise of the Nazi Party," Journal of Political Economy, University of Chicago Press, vol. 125(2), pages 478-526.
    26. McBride, Michael, 2001. "Relative-income effects on subjective well-being in the cross-section," Journal of Economic Behavior & Organization, Elsevier, vol. 45(3), pages 251-278, July.
    27. Douglas Gollin & Stephen Parente & Richard Rogerson, 2002. "The Role of Agriculture in Development," American Economic Review, American Economic Association, vol. 92(2), pages 160-164, May.
    28. Lung-Fei Lee, 1982. "Some Approaches to the Correction of Selectivity Bias," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 49(3), pages 355-372.
    29. R. Vermunt & E. Spaans & F. Zorge, 1989. "Satisfaction, happiness and well-being of Dutch students," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 21(1), pages 1-33, February.
    30. Florence Jaumotte & Subir Lall & Chris Papageorgiou, 2013. "Rising Income Inequality: Technology, or Trade and Financial Globalization?," IMF Economic Review, Palgrave Macmillan;International Monetary Fund, vol. 61(2), pages 271-309, June.
    31. Noy, Shakked & Sin, Isabelle, 2021. "The effects of neighbourhood and workplace income comparisons on subjective wellbeing," Journal of Economic Behavior & Organization, Elsevier, vol. 185(C), pages 918-945.
    32. repec:ces:ifodic:v:8:y:2010:i:4:p:14994781 is not listed on IDEAS
    33. Haroon Bhorat & Ravi Kanbur & Benjamin Stanwix, 2014. "Estimating the Impact of Minimum Wages on Employment, Wages, and Non-Wage Benefits: The Case of Agriculture in South Africa," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 96(5), pages 1402-1419.
    34. Andreja Brajša-Žganec & Marina Merkaš & Iva Šverko, 2011. "Quality of Life and Leisure Activities: How do Leisure Activities Contribute to Subjective Well-Being?," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 102(1), pages 81-91, May.
    35. KNIGHT, John & SONG, Lina & GUNATILAKA, Ramani, 2009. "Subjective well-being and its determinants in rural China," China Economic Review, Elsevier, vol. 20(4), pages 635-649, December.
    36. Zhang, Xin & Zhang, Xiaobo & Chen, Xi, 2017. "Happiness in the air: How does a dirty sky affect mental health and subjective well-being?," Journal of Environmental Economics and Management, Elsevier, vol. 85(C), pages 81-94.
    37. Haiyang Lu & Ivan T. Kandilov, 2021. "Does Mobile Internet Use Affect the Subjective Well-being of Older Chinese Adults? An Instrumental Variable Quantile Analysis," Journal of Happiness Studies, Springer, vol. 22(7), pages 3137-3156, October.
    38. Huawei Han & Qin Gao, 2020. "Does Welfare Participation Improve Life Satisfaction? Evidence from Panel Data in Rural China," Journal of Happiness Studies, Springer, vol. 21(5), pages 1795-1822, June.
    39. Sharmistha Self & Richard Grabowski, 2007. "Economic development and the role of agricultural technology," Agricultural Economics, International Association of Agricultural Economists, vol. 36(3), pages 395-404, May.
    40. Ferrer-i-Carbonell, Ada, 2005. "Income and well-being: an empirical analysis of the comparison income effect," Journal of Public Economics, Elsevier, vol. 89(5-6), pages 997-1019, June.
    41. Ricardo Perez-Truglia, 2020. "The Effects of Income Transparency on Well-Being: Evidence from a Natural Experiment," American Economic Review, American Economic Association, vol. 110(4), pages 1019-1054, April.
    42. Thomas Markussen & Maria Fibæk & Finn Tarp & Nguyen Do Anh Tuan, 2018. "The Happy Farmer: Self-Employment and Subjective Well-Being in Rural Vietnam," Journal of Happiness Studies, Springer, vol. 19(6), pages 1613-1636, August.
    43. Lasse Steiner & Lisa Leinert & Bruno S. Frey, 2010. "Economics, Religion and Happiness," Zeitschrift für Wirtschafts- und Unternehmensethik - Journal for Business, Economics & Ethics, Rainer Hampp Verlag, vol. 11(1), pages 9-24.
    44. Chen, Minjie & Heerink, Nico & Zhu, Xueqin & Feng, Shuyi, 2022. "Do small and equally distributed farm sizes imply large resource misallocation? Evidence from wheat-maize double-cropping in the North China Plain," Food Policy, Elsevier, vol. 112(C).
    45. Timothy G. Conley & Christian B. Hansen & Peter E. Rossi, 2012. "Plausibly Exogenous," The Review of Economics and Statistics, MIT Press, vol. 94(1), pages 260-272, February.
    46. Hans van Kippersluis & Cornelius A. Rietveld, 2018. "Beyond plausibly exogenous," Econometrics Journal, Royal Economic Society, vol. 21(3), pages 316-331, October.
    47. David Newman & Louis Tay & Ed Diener, 2014. "Leisure and Subjective Well-Being: A Model of Psychological Mechanisms as Mediating Factors," Journal of Happiness Studies, Springer, vol. 15(3), pages 555-578, June.
    48. Michael Lokshin & Zurab Sajaia, 2004. "Maximum likelihood estimation of endogenous switching regression models," Stata Journal, StataCorp LP, vol. 4(3), pages 282-289, September.
    49. Bruno S. Frey & Alois Stutzer, 2010. "Happiness: A New Approach in Economics," ifo DICE Report, ifo Institute - Leibniz Institute for Economic Research at the University of Munich, vol. 8(04), pages 3-7, January.
    50. Easterlin, Richard A., 1974. "Does Economic Growth Improve the Human Lot? Some Empirical Evidence," MPRA Paper 111773, University Library of Munich, Germany.
    51. Kassie, Menale & Shiferaw, Bekele & Muricho, Geoffrey, 2011. "Agricultural Technology, Crop Income, and Poverty Alleviation in Uganda," World Development, Elsevier, vol. 39(10), pages 1784-1795.
    52. Kong, Dongmin & Qin, Ni & Xiang, Junyi, 2021. "Minimum wage and entrepreneurship: Evidence from China," Journal of Economic Behavior & Organization, Elsevier, vol. 189(C), pages 320-336.
    53. Ed Diener & Shigehiro Oishi & Louis Tay, 2018. "Advances in subjective well-being research," Nature Human Behaviour, Nature, vol. 2(4), pages 253-260, April.
    54. Hiroyuki Takeshima & Alejandro Nin—Pratt & Xinshen Diao, 2013. "Mechanization and Agricultural Technology Evolution, Agricultural Intensification in Sub-Saharan Africa: Typology of Agricultural Mechanization in Nigeria," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 95(5), pages 1230-1236.
    55. Belton, Ben & Win, Myat Thida & Zhang, Xiaobo & Filipski, Mateusz, 2021. "The rapid rise of agricultural mechanization in Myanmar," Food Policy, Elsevier, vol. 101(C).
    56. Xiao-yuan Dong & Xinli An, 2015. "Gender Patterns and Value of Unpaid Care Work: Findings From China's First Large-Scale Time Use Survey," Review of Income and Wealth, International Association for Research in Income and Wealth, vol. 61(3), pages 540-560, September.
    57. Dolan, Paul & Peasgood, Tessa & White, Mathew, 2008. "Do we really know what makes us happy A review of the economic literature on the factors associated with subjective well-being," Journal of Economic Psychology, Elsevier, vol. 29(1), pages 94-122, February.
    58. Meng-Wen Tsou & Jin-Tan Liu, 2001. "Happiness and Domain Satisfaction in Taiwan," Journal of Happiness Studies, Springer, vol. 2(3), pages 269-288, September.
    59. Nakano, Yuko & Magezi, Eustadius F., 2020. "The impact of microcredit on agricultural technology adoption and productivity: Evidence from randomized control trial in Tanzania," World Development, Elsevier, vol. 133(C).
    60. Bao, Te & Yuan, Yuemei & Luo, Weidong & Xu, Bin, 2024. "Unlucky to have brothers: Sibling sex composition and girls’ locus of control," World Development, Elsevier, vol. 173(C).
    61. Minten, Bart & Barrett, Christopher B., 2008. "Agricultural Technology, Productivity, and Poverty in Madagascar," World Development, Elsevier, vol. 36(5), pages 797-822, May.
    62. Sibel Selim, 2008. "Life Satisfaction and Happiness in Turkey," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 88(3), pages 531-562, September.
    63. Michael Lokshin & Zurab Sajaia, 2011. "Impact of interventions on discrete outcomes: Maximum likelihood estimation of the binary choice models with binary endogenous regressors," Stata Journal, StataCorp LP, vol. 11(3), pages 368-385, September.
    64. Nickols, Sharon Y & Fox, Karen D, 1983. "Buying Time and Saving Time: Strategies for Managing Household Production," Journal of Consumer Research, Journal of Consumer Research Inc., vol. 10(2), pages 197-208, September.
    65. Hayami, Yujiro & Ruttan, V W, 1970. "Factor Prices and Technical Change in Agricultural Development: The United States and Japan, 1880-1960," Journal of Political Economy, University of Chicago Press, vol. 78(5), pages 1115-1141, Sept.-Oct.
    66. Yamauchi, Futoshi, 2016. "Rising real wages, mechanization and growing advantage of large farms: Evidence from Indonesia," Food Policy, Elsevier, vol. 58(C), pages 62-69.
    67. Samuel Benin, 2015. "Impact of Ghana's agricultural mechanization services center program," Agricultural Economics, International Association of Agricultural Economists, vol. 46(S1), pages 103-117, November.
    68. Ruzzante, Sacha & Labarta, Ricardo & Bilton, Amy, 2021. "Adoption of agricultural technology in the developing world: A meta-analysis of the empirical literature," World Development, Elsevier, vol. 146(C).
    69. Ed Diener & Ed Sandvik & Larry Seidlitz & Marissa Diener, 1993. "The relationship between income and subjective well-being: Relative or absolute?," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 28(3), pages 195-223, March.
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