This paper has been announced in the following NEP Reports:

• NEP-ALL-2005-11-19 (All new papers)
• NEP-BEC-2005-11-19 (Business Economics)
• NEP-CBE-2005-11-19 (Cognitive & Behavioural Economics)
• NEP-EXP-2005-11-19 (Experimental Economics)
• NEP-GTH-2005-11-19 (Game Theory)
• NEP-SOC-2005-11-19 (Social Norms & Social Capital)

1. 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)
   Other versions:
   • Bull, Clive & Schotter, Andrew & Weigelt, Keith, 1985. "Tournaments and Piece Rates: An Experimental Study," Working Papers 85-21, C.V. Starr Center for Applied Economics, New York University. [Downloadable!]
2. Keser, Claudia & Willinger, Marc, 2000. "Principals' principles when agents' actions are hidden," International Journal of Industrial Organization, Elsevier, vol. 18(1), pages 163-185, January. [Downloadable!] (restricted)
3. Chiappori, Pierre Andre & Salanie, Bernard, 2002. "Testing Contract Theory: A Survey of Some Recent Work," CESifo Working Paper Series CESifo Working Paper No. , CESifo Group Munich. [Downloadable!]
   Other versions:
   • Pierre-André Chiappori ; Bernard Salanié, 2002. "Testing Contract Theory : A Survey of Some Recent Work," Working Papers 2002-11, Centre de Recherche en Economie et Statistique. [Downloadable!]
4. Ernst Fehr & Simon Gachter & Georg Kirchsteiger, 2001. "Reciprocity as a Contract Enforcement Device," Levine's Working Paper Archive 563824000000000143, David K. Levine. [Downloadable!]
5. Fehr, Ernst & Schmidt, Klaus M., 2001. "Theories of Fairness and Reciprocity," Discussion Papers in Economics 14, University of Munich, Department of Economics. [Downloadable!]
6. Gary Charness, 2004. "Attribution and Reciprocity in an Experimental Labor Market," Journal of Labor Economics, University of Chicago Press, vol. 22(3), pages 665-688, July. [Downloadable!]
   Other versions:
   • Gary Charness, 2004. "Attribution And Reciprocity In An Experimental Labor Market," University of California at Santa Barbara, Economics Working Paper Series 08-04, Department of Economics, UC Santa Barbara. [Downloadable!]
7. Adriana D. Kugler & Gilles Saint-Paul, 2004. "How Do Firing Costs Affect Worker Flows in a World with Adverse Selection?," Journal of Labor Economics, University of Chicago Press, vol. 22(3), pages 553-584, July. [Downloadable!]
8. Dufwenberg, Martin & Kirchsteiger, Georg, 2004. "A theory of sequential reciprocity," Games and Economic Behavior, Elsevier, vol. 47(2), pages 268-298, May. [Downloadable!] (restricted)
   Other versions:
   • Dufwenberg, M. & Kirchsteiger, G., 1998. "A theory of sequential reciprocity," Discussion Paper 37, Tilburg University, Center for Economic Research. [Downloadable!]
   • Margin Dufwenberg & Georg Kirchsteiger, 2001. "A Theory of Sequential Reciprocity," Levine's Working Paper Archive 563824000000000090, David K. Levine. [Downloadable!]
9. Gary E Bolton & Axel Ockenfels, 1997. "A Theory of Equity, Reciprocity, and Competition," Levine's Working Paper Archive 1889, David K. Levine. [Downloadable!]
10. Gary Charness & Matthew Rabin, 2002. "Understanding Social Preferences with Simple Tests," Department of Economics, Working Paper Series 1042, Department of Economics, Institute for Business and Economic Research, UC Berkeley. [Downloadable!]
    Other versions:
    • Gary Charness & Matthew Rabin, 2001. "Understanding Social Preferences With Simple Tests," University of California at Santa Barbara, Economics Working Paper Series 21-01, Department of Economics, UC Santa Barbara. [Downloadable!]
    • Gary Charness & Matthew Rabin, 2003. "Understanding Social Preferences with Simple Tests," General Economics and Teaching 0303002, EconWPA. [Downloadable!]
    • Gary Charness & Matthew Rabin, 2002. "Understanding Social Preferences With Simple Tests," The Quarterly Journal of Economics, MIT Press, vol. 117(3), pages 817-869, August. [Downloadable!] (restricted)
11. Camerer, Colin & Weigelt, Keith, 1988. "Experimental Tests of a Sequential Equilibrium Reputation Model," Econometrica, Econometric Society, vol. 56(1), pages 1-36, January. [Downloadable!] (restricted)
12. Samuelson, Larry, 2001. "Analogies, Adaptation, and Anomalies," Journal of Economic Theory, Elsevier, vol. 97(2), pages 320-366, April. [Downloadable!] (restricted)
13. 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)
14. Nalbantian, Haig R & Schotter, Andrew, 1997. "Productivity under Group Incentives: An Experimental Study," American Economic Review, American Economic Association, vol. 87(3), pages 314-41, June. [Downloadable!] (restricted)
    Other versions:
    • Nalbantian, Haig & Schotter, Andrew, 1994. "Productivity Under Group Incentives: An Experimental Study," Working Papers 94-04, C.V. Starr Center for Applied Economics, New York University. [Downloadable!]
15. Cox, James C. & Friedman, Daniel & Gjerstad, Steven, 2007. "A tractable model of reciprocity and fairness," Games and Economic Behavior, Elsevier, vol. 59(1), pages 17-45, April. [Downloadable!] (restricted)
    Other versions:
    • James C. Cox & Daniel Friedman & Steven Gjerstad, 2006. "A Tractable Model of Reciprocity and Fairness," Experimental Economics Center Working Paper Series 2006-05, Experimental Economics Center, Andrew Young School of Policy Studies, Georgia State University. [Downloadable!]
    • Cox, J. & Friedman, D. & Gjerstad, S., 2006. "A Trackable Model of Reciprocity and Fairness," Purdue University Economics Working Papers 1181, Purdue University, Department of Economics. [Downloadable!]
    • James Cox & Daniel Friedman & Steven Gjerstad, 2004. "A Tractable Model of Reciprocity and Fairness," Experimental 0406001, EconWPA. [Downloadable!]
16. David K. Levine, 1998. "Modeling Altruism and Spitefulness in Experiment," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 1(3), pages 593-622, July. [Downloadable!] (restricted)
    Other versions:
    • David K Levine, 1997. "Modeling Altruism and Spitefulness in Experiments," Levine's Working Paper Archive 2047, David K. Levine. [Downloadable!]
17. Werner Güth & Wolfgang Klose & Manfred Königstein & Joachim Schwalbach, 1998. "An experimental study of a dynamic principal-agent relationship," Managerial and Decision Economics, John Wiley & Sons, Ltd., vol. 19(4-5), pages 327-341.
18. Joel Sobel, 2005. "Interdependent Preferences and Reciprocity," Journal of Economic Literature, American Economic Association, vol. 43(2), pages 392-436, June. [Downloadable!] (restricted)
19. Werner Güth & Manfred Königstein & Judit Kovács & Enikõ Zala-Mezõ, 2001. "Fairness Within Firms: The Case Of One Principal And Multiple Agents," Schmalenbach Business Review (sbr), LMU Munich School of Management, vol. 53(2), pages 82-101, April. [Downloadable!]
20. Bohnet, Iris & Zeckhauser, Richard, 2004. "Trust, risk and betrayal," Journal of Economic Behavior & Organization, Elsevier, vol. 55(4), pages 467-484, December. [Downloadable!] (restricted)
    Other versions:
    • Bohnet, Iris & Zeckhauser, Richard, 2003. "Trust, Risk and Betrayal," Working Paper Series rwp03-041, Harvard University, John F. Kennedy School of Government. [Downloadable!]
21. Ernst Fehr & Klaus M. Schmidt, . "A Theory of Fairness, Competition and Cooperation," IEW - Working Papers iewwp004, Institute for Empirical Research in Economics - IEW. [Downloadable!]
    Other versions:
    • Fehr, Ernst & Schmidt, Klaus M., 1998. "A Theory of Fairness, Competition and Cooperation," CEPR Discussion Papers 1812, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
    • Ernst Fehr & Klaus M. Schmidt, 1999. "A Theory Of Fairness, Competition, And Cooperation," The Quarterly Journal of Economics, MIT Press, vol. 114(3), pages 817-868, August. [Downloadable!] (restricted)
22. Falk, Armin & Fischbacher, Urs, 2006. "A theory of reciprocity," Games and Economic Behavior, Elsevier, vol. 54(2), pages 293-315, February. [Downloadable!] (restricted)
    Other versions:
    • Armin Falk & Urs Fischbacher, . "A Theory of Reciprocity," IEW - Working Papers iewwp006, Institute for Empirical Research in Economics - IEW. [Downloadable!]
    • Armin Falk & Urs Fischbacher, 2001. "A Theory of Reciprocity," CESifo Working Paper Series CESifo Working Paper No. , CESifo Group Munich. [Downloadable!]
    • Falk, Armin & Fischbacher, Urs, 2001. "A Theory of Reciprocity," CEPR Discussion Papers 3014, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
23. Gary Charness & Guillaume R. Frechette & John H. Kagel, 2004. "How Robust is Laboratory Gift Exchange?," Experimental Economics, Springer, vol. 7(2), pages 189-205, 06. [Downloadable!]
    Other versions:
    • Gary Charness & Guillaume Frechette & John Kagel, 2002. "How Robust is Laboratory Gift Exchange?," University of California at Santa Barbara, Economics Working Paper Series 10-03, Department of Economics, UC Santa Barbara. [Downloadable!]
24. Chaudhuri, Ananish, 1998. "The ratchet principle in a principal agent game with unknown costs: an experimental analysis," Journal of Economic Behavior & Organization, Elsevier, vol. 37(3), pages 291-304, November. [Downloadable!] (restricted)
    Other versions:
    • Ananish Chaudhuri, 1997. "The Ratchet Principle in a Principal Agent Game with Unknown Costs: An Experimental Analysis," Departmental Working Papers 199608, Rutgers University, Department of Economics.
25. Canice Prendergast, 1999. "The Provision of Incentives in Firms," Journal of Economic Literature, American Economic Association, vol. 37(1), pages 7-63, March. [Downloadable!] (restricted)
26. Rabin, Matthew, 1993. "Incorporating Fairness into Game Theory and Economics," American Economic Review, American Economic Association, vol. 83(5), pages 1281-1302, December. [Downloadable!] (restricted)
27. Vital Anderhub & Simon Gächter & Manfred Königstein, 2002. "Efficient Contracting and Fair Play in a Simple Principal-Agent Experiment," Experimental Economics, Springer, vol. 5(1), pages 5-27, June. [Downloadable!] (restricted)
    Other versions:
    • Vital Anderhub & Simon Gaechter & Manfred Koenigstein, . "Efficient Contracting and Fair Play in a Simple Principal-Agent Experiment," IEW - Working Papers iewwp018, Institute for Empirical Research in Economics - IEW. [Downloadable!]
    • V. Anderhub & S. Gächter & M. Königstein, . "Efficient Contracting and Fair Play in a Simple Principal-Agent Experiment," Sonderforschungsbereich 373 1999-82, Humboldt Universitaet Berlin.
28. Berg Joyce & Dickhaut John & McCabe Kevin, 1995. "Trust, Reciprocity, and Social History," Games and Economic Behavior, Elsevier, vol. 10(1), pages 122-142, July. [Downloadable!] (restricted)
29. R. Lynn Hannan & John H. Kagel & Donald V. Moser, 2002. "Partial Gift Exchange in an Experimental Labor Market: Impact of Subject Population Differences, Productivity Differences, and Effort Requests on Behavior," Journal of Labor Economics, University of Chicago Press, vol. 20(4), pages 923-951, October. [Downloadable!]
30. Bengt Holmstrom, 1982. "Moral Hazard in Teams," Bell Journal of Economics, The RAND Corporation, vol. 13(2), pages 324-340, Autumn. [Downloadable!] (restricted)