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Clean Evidence on Peer Pressure

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Author Info
Armin Falk
Andrea Ichino

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Abstract

While confounding factors typically jeopardize the possibility of using observational data to measure peer effects, field experiments over the potential for obtaining clean evidence. In this paper we measure the output of subjects who were asked to stuff letters into envelopes, with a remuneration completely independent of output. We study two treatments. In the "pair" treatment two subjects work at the same time in the same room. Peer effects are possible in this situation and imply that outputs within pairs should be similar. In the "single" treatment, which serves as a control, subjects work alone in a room and peer effects are ruled out by design. Our main results are as follows: First, we find clear and unambiguous evidence for the existence of peer effects in the pair treatment. The standard deviations of output are significantly smaller within pairs than between pairs. Second, average output in the pair treatment largely exceeds output in the single treatment, i.e., peer effects raise productivity. Third, low productivity workers are significantly more sensitive to the behavior of peers than are high productivity workers. Our findings yield important implications for the design of the workplace.

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Paper provided by The Field Experiments Website in its series Natural Field Experiments with number 0046.

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Date of creation: 2003
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Handle: RePEc:feb:natura:0046

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Related research
Keywords: peer effects; field experiments; incentives;

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Find related papers by JEL classification:
D2 - Microeconomics - - Production and Organizations
J2 - Labor and Demographic Economics - - Demand and Supply of Labor
K4 - Law and Economics - - Legal Procedure, the Legal System, and Illegal Behavior

References listed on IDEAS
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  1. Andrea Ichino & Giovanni Maggi, 1999. "Work Environment and Individual Background: Explaining Regional Shirking Differentials in a Large Italian Firm," NBER Working Papers 7415, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  2. Spagnolo, Giancarlo, 1999. "Social relations and cooperation in organizations," Journal of Economic Behavior & Organization, Elsevier, vol. 38(1), pages 1-25, January. [Downloadable!] (restricted)
  3. Encinosa III, William E. & Gaynor, Martin & Rebitzer, James B., 2007. "The sociology of groups and the economics of incentives: Theory and evidence on compensation systems," Journal of Economic Behavior & Organization, Elsevier, vol. 62(2), pages 187-214, February. [Downloadable!] (restricted)
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  4. S. Huck & D. Kübler & J. Weibull, . "Social norms and optimal incentives in firms," Sonderforschungsbereich 373 2002-11, Humboldt Universitaet Berlin.
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  5. Falk, Armin & Fischbacher, Urs, 2002. ""Crime" in the lab-detecting social interaction," European Economic Review, Elsevier, vol. 46(4-5), pages 859-869, May. [Downloadable!] (restricted)
  6. Glaeser, Edward L & Sacerdote, Bruce & Scheinkman, Jose A, 1996. "Crime and Social Interactions," The Quarterly Journal of Economics, MIT Press, vol. 111(2), pages 507-48, May. [Downloadable!] (restricted)
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  7. Fehr, Ernst & Kirchsteiger, George & Riedl, Arno, 1993. "Does Fairness Prevent Market Clearing? An Experimental Investigation," The Quarterly Journal of Economics, MIT Press, vol. 108(2), pages 437-59, May. [Downloadable!] (restricted)
  8. Lawrence F. Katz & Jeffrey R. Kling & Jeffrey B. Liebman, 2000. "Moving to Opportunity in Boston: Early Results of a Randomized Mobility Experiment," NBER Working Papers 7973, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  9. Daniel S. Nagin & James B. Rebitzer & Seth Sanders & Lowell J. Taylor, 2002. "Monitoring, Motivation, and Management: The Determinants of Opportunistic Behavior in a Field Experiment," American Economic Review, American Economic Association, vol. 92(4), pages 850-873, September. [Downloadable!]
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  10. Kandel, Eugene & Lazear, Edward P, 1992. "Peer Pressure and Partnerships," Journal of Political Economy, University of Chicago Press, vol. 100(4), pages 801-17, August. [Downloadable!] (restricted)
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  11. Bull, Clive & Schotter, Andrew & Weigelt, Keith, 1987. "Tournaments and Piece Rates: An Experimental Study," Journal of Political Economy, University of Chicago Press, vol. 95(1), pages 1-33, February. [Downloadable!] (restricted)
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  12. George A. Akerlof, 1997. "Social Distance and Social Decisions," Econometrica, Econometric Society, vol. 65(5), pages 1005-1028, September.
  13. Fahr, Rene & Irlenbusch, Bernd, 2000. "Fairness as a constraint on trust in reciprocity: earned property rights in a reciprocal exchange experiment," Economics Letters, Elsevier, vol. 66(3), pages 275-282, March. [Downloadable!] (restricted)
  14. Bruce Sacerdote, 2001. "Peer Effects With Random Assignment: Results For Dartmouth Roommates," The Quarterly Journal of Economics, MIT Press, vol. 116(2), pages 681-704, May. [Downloadable!] (restricted)
  15. Marianne Bertrand & Erzo F. P. Luttmer & Sendhil Mullainathan, 2000. "Network Effects And Welfare Cultures," The Quarterly Journal of Economics, MIT Press, vol. 115(3), pages 1019-1055, August. [Downloadable!] (restricted)
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  16. van Dijk, Frans & Sonnemans, Joep & van Winden, Frans, 2001. "Incentive systems in a real effort experiment," European Economic Review, Elsevier, vol. 45(2), pages 187-214, February. [Downloadable!] (restricted)
  17. Anne C. Case & Lawrence F. Katz, 1991. "The Company You Keep: The Effects of Family and Neighborhood on Disad- vantaged Youths," NBER Working Papers 3705, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  18. Topa, Giorgio, 1997. "Social Interactions, Local Spillovers and Unemployment," Working Papers 97-17, C.V. Starr Center for Applied Economics, New York University. [Downloadable!]
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  19. Manski, Charles F, 1993. "Identification of Endogenous Social Effects: The Reflection Problem," Review of Economic Studies, Blackwell Publishing, vol. 60(3), pages 531-42, July. [Downloadable!] (restricted)
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