Excusable Selfishness: A Rawlsian Explanation for Maximizing One's Own Chances to Win a Lottery

有理由的自私：羅斯對人們最大化贏得彩卷機率之解釋

10.30401/RSS.202106_15(1).0001

彭惠君(Hui-Chun Peng)；鄧軫元(Joshua Chen-Yuan Teng)

Equality of opportunity ； Social Preferences ； John Rawls ； Risk ； 機會上的平等 ； 社會偏好 ； 約翰羅斯 ； 風險

社會科學論叢

15卷1期（2021 / 06 / 01）

1 - 43

英文

Most subjects maximized own chances to win a lottery in previous experimental studies. Scholars have explained the result by a weak concern for ex ante equality. Rawls (1971/1999) provides a psychological motive for the weak preference. He argues that distributing income according to the outcome of a lottery is ＂arbitrary＂ and unfair. Moreover, he believes that treated by the unjust institution, people could possess ＂excusable envy＂ towards potential winners, which leads them to deal with others unfairly by maximizing own chances. This study tests experimentally whether subjects practice excusable selfishness. Our results support Rawlsian thought, since many exhibited a weak preference for an equal expected payoff and deviated their baseline social preferences. The finding provides the first psychological explanation for why most people maximize their winning probabilities and casts doubts on the equally lucky view of equality of opportunity.

在過往的實驗研究中，大部分受試者會最大化自己贏得彩卷的機率。學者以對機會公平的偏好微弱來解釋此結果。羅斯（Rawls, 1971/1999）提出另一種心理上的解釋：他認為根據隨機的結果來分配所得是不公平的。被如此不公平對待時，人們會對可能的彩卷贏家產生「有理由的忌妒」，因此會最大化自己的機率。本研究以實驗方法驗證人們是否懷有「有理由的自私」。實驗結果證實了羅斯的想法，因為大部分受試者不追求公平的預期報酬、違背了自己原本的社會偏好。此研究除了解釋為何人們最大化自身贏得彩卷機率的心理，也對公平機率是一種機會上的平等概念提出質疑。

1. Andreoni, J.,Aydin, D.,Barton, B.,Bernheim, B.D,Naecker, J.(2016).When fair isn’t fair: Sophisticated time inconsistency in social preferences.SSRN Electronic Journal,2763318.
2. Becker, A.,Miller, L.M.(2009).Promoting Justice by Treating People Unequally: An Experimental Study.Experimental Economics,12(4),437-449.
3. Bolton, G. E.,Ockenfels, A.(2010).Betrayal aversion: Evidence from Brazil, China, Oman, Switzerland, Turkey, and the United States: Comment.American Economic Review,100(1),628-633.
4. Broberg, T.,Ellingsen, T.,Johannesson, M.(2007).Is Generosity Involuntary?.Economics Letters,94(1),32-37.
5. Brock, J. M.,Lange, A.,Ozbay, E.Y.(2016).Dictating the Risk: Experimental Evidence on Giving in Risky Environments: Reply.American Economic Review,106(3),840-842.
6. Brock, J. M.,Lange, A.,Ozbay, E.Y.(2013).Dictating the Risk: Experimental Evidence on Giving in Risky Environments.American Economic Review,106(3),415-437.
7. Camerer, C. F.(2003).Behavioral Game Theory.New York:Russell Sage Foundation.
8. Cappelen, A. W.,Konow, J.,Sørensen, E.,Tungodden, B.(2013).Just Luck: An Experimental Study of Risk-Taking and Fairness.American Economic Review,103(4),1398-1413.
9. Dana, J.,Cain, D.M.,Dawes, R.M.(2006).What You don’t Know won’t Hurt Me: Costly (but Quiet) exit in Dictator Games.Organizational Behavior and Human Decision Processes,100(2),193-201.
10. Eisenkopf, G.,Fischbacher, U.,Föllmi-Heusi, F.(2013).Unequal Opportunities and Distributive Justice.Journal of Economic Behavior & Organization,93,51-61.
11. Fehr, E.,Schmidt, K.M.(1999).A Theory of Fairness, Competition, and Cooperation.The Quarterly Journal of Economics,114(3),817-868.
12. Fischbacher, U.(2007).Zurich Toolbox for Readymade Economic Experiments.Experimental Economics,10(2),171-178.
13. Freundt, J.,Lange, A.(2017).On the determinants of giving under risk.Journal of Economic Behavior & Organization,142,24-31.
14. Holt, C. A.,Laury, S.K.(2002).Risk Aversion and Incentive Effects.American Economic Review,92(5),1644-1655.
15. Krawczyk, M.(2010).A Glimpse through the Veil of Ignorance: Equality of Opportunity and Support for Redistribution.Journal of Public Economics,94(1-2),131-141.
16. Krawczyk, M.,Lec, F.L.(2016).Dictating the risk: Experimental evidence on giving in risky environments: Comment.American Economic Review,106(3),836-839.
17. Krawczyk, M.,Lec, F.L.(2010).'Give me a chance!' An experiment in social decision under risk.Experimental economics,13(4),500-511.
18. Miao, Bin,Zhong, S.(2018).Probabilistic Social Preference: How Machina’s Mom Randomizes Her Choice.Economic Theory,64(1),1-24.
19. Rawls, J.(1971).A Theory of Justice.Cambridge Massachusetts:The Belknap Press of Harvard University Press.
20. Rawls, J.(1999).A Theory of Justice.Cambridge, Massachusetts:The Belknap Press of Harvard University Press.
21. Robert, S.,Sheremeta, R.M.,Schmidt, D.,Walker, J.(2013).Resource Allocation Contests: Experimental Evidence.Journal of Economic Psychology,39,257-267.
22. Roemer, J. E.(1998).Equality of Opportunity.Cambridge, Massachusetts:Harvard University Press.
23. Saito, K.(2013).Social Preferences under Risk: Equality of Opportunity versus Equality of Outcome.American Economic Review,103(7),3084-3101.
24. Schildberg-Horisch, H.(2010).Is the Veil of Ignorance only a Concept about Risk? An Experiment.Journal of Public Economics,94(11-12),1062-1066.
25. Sheremeta, R. M. 2016. “Impulsive Behavior in Competition: Testing Theories of Overbidding in Rent-Seeking Contests,” Working paper.
26. Teng, J. C.,Wang, J.T.,Yang, C.C.(2020).Justice, What Money Can Buy: A Lab Experiment on Primary Social Goods and the Rawlsian Difference Principle.Constitutional Political Economy,31,45-69.