D. Aadland and A. J. Caplan, Cheap talk reconsidered: New evidence from CVM, Journal of Economic Behavior & Organization, vol.60, issue.4, pp.562-578, 2006.
DOI : 10.1016/j.jebo.2004.09.006

P. Battigalli and M. Dufwenberg, Guilt in Games, American Economic Review, vol.97, issue.2, pp.170-176, 2007.
DOI : 10.1257/aer.97.2.170

D. Bem, Self-Perception Theory, Advances in experimental social psychology, 1972.
DOI : 10.1016/S0065-2601(08)60024-6

R. Bodner and D. Prelec, Self-signaling in a neo-Calvinist model of everyday decision making, Essays in Psychology and Economics, 2001.

S. Bowles, Policies Designed for Self-Interested Citizens May Undermine "The Moral Sentiments": Evidence from Economic Experiments, Science, vol.320, issue.5883, pp.1605-1609, 2008.
DOI : 10.1126/science.1152110

M. Braham and F. Bolle, A difficulty with oaths: On trust, trustworthiness, and signalling, European Journal of Law and Economics, vol.36, issue.3, pp.219-232, 2006.
DOI : 10.1007/s10657-006-0448-3

J. Brehm, A theory of psychological reactance, 1966.

I. Brocas, J. Carrillo, and M. Dewatripont, Commitment devices under self-control problems: An overview, The Psychology of Economic Decisions, pp.49-66, 2003.

T. C. Brown, I. Ajzen, and D. Hrubes, Further tests of entreaties to avoid hypothetical bias in referendum contingent valuation, Journal of Environmental Economics and Management, vol.46, issue.2, pp.353-361, 2003.
DOI : 10.1016/S0095-0696(02)00041-4

J. M. Burger, The Foot-in-the-Door Compliance Procedure: A Multiple-Process Analysis and Review, Personality and Social Psychology Review, vol.9, issue.4, pp.303-325, 1999.
DOI : 10.1207/s15327957pspr0304_2

J. Carpenter, A. Liati, and B. Vickery, They Come To Play: Supply Effects in an Economic Experiment, Rationality and Society, vol.22, issue.1, 2006.
DOI : 10.1177/1043463109358486

G. Charness and M. Dufwenberg, Promises and Partnership, Econometrica, vol.74, issue.6, pp.1579-1601, 2006.
DOI : 10.1111/j.1468-0262.2006.00719.x

T. Cherry, P. Frykblom, J. Shogren, J. List, and M. Sullivan, Laboratory Testbeds and Non-Market Valuation: The Case of Bidding Behavior in a Second-Price Auction with an Outside Option, Environmental and Resource Economics, vol.84, issue.3, pp.29-285, 2004.
DOI : 10.1007/s10640-004-5264-z

T. L. Cherry, P. Frykblom, and J. F. Shogren, Hardnose the Dictator, American Economic Review, vol.92, issue.4, pp.1218-1221, 2002.
DOI : 10.1257/00028280260344740

R. Cummings, D. Brookshire, and W. Schulze, Valuing Environmental Goods: An Assessment of the Contingent Valuation Method, 1986.

R. G. Cummings, S. Elliott, G. W. Harrison, and J. Murphy, Are Hypothetical Referenda Incentive Compatible?, Journal of Political Economy, vol.105, issue.3, pp.609-621, 1997.
DOI : 10.1086/262084

R. G. Cummings and L. O. Taylor, Unbiased Value Estimates for Environmental Goods: A Cheap Talk Design for the Contingent Valuation Method, American Economic Review, vol.89, issue.3, pp.649-665, 1999.
DOI : 10.1257/aer.89.3.649

R. Davidson and J. G. Mackinnon, Bootstrap methods in econometrics, Palgrave Handbooks of Econometrics, pp.812-838, 2006.

E. Deci, Intrinsinc motivation, 1975.

E. L. Deci, R. Koestner, and R. M. Ryan, A meta-analytic review of experiments examining the effects of extrinsic rewards on intrinsic motivation., Psychological Bulletin, vol.125, issue.6, pp.627-668, 1999.
DOI : 10.1037/0033-2909.125.6.627

M. Dufwenberg and U. Gneezy, Measuring Beliefs in an Experimental Lost Wallet Game, Games and Economic Behavior, vol.30, issue.2, pp.163-182, 2000.
DOI : 10.1006/game.1999.0715

M. Ehmke, J. L. Lusk, and J. List, Is Hypothetical Bias a Universal Phenomenon? A Multi- National Investigation, 2007.

T. Ellingsen and M. Johannesson, Promises, Threats and Fairness*, The Economic Journal, vol.94, issue.2, pp.397-420, 2004.
DOI : 10.1006/jeth.2001.2803

J. Elster, Ulysses and the Sirens: A theory of imperfect rationality, Social Science Information, vol.16, issue.5, pp.469-526, 1977.
DOI : 10.1177/053901847701600501

J. Fichte, Grundlage des Naturrechts nach Principien der Wissenschaftslehre: Zweiter Theil oder Angewandtes Naturrecht. Iena und Leipzig, 1797.

J. L. Freedman and S. Fraser, Compliance without pressure: The foot-in-the-door technique., Journal of Personality and Social Psychology, vol.4, issue.2, pp.195-202, 1966.
DOI : 10.1037/h0023552

J. L. Freedman and S. C. Fraser, Compliance without pressure: The foot-in-the-door technique., Journal of Personality and Social Psychology, vol.4, issue.2, pp.195-202, 1966.
DOI : 10.1037/h0023552

B. S. Frey and R. Jegen, Motivation Crowding Theory, Journal of Economic Surveys, vol.15, issue.5, pp.589-611, 2001.
DOI : 10.1111/1467-6419.00150

B. Greiner, An Online Recruitment System for Economic Experiments., " in Forschung und wissenschaftliches Rechnen, GWDG Bericht, vol.63, pp.79-93, 2003.

G. Harrison, Experimental Evidence on Alternative Environmental Valuation Methods, Environmental and Resource Economics, vol.50, issue.5, pp.125-162, 2006.
DOI : 10.1007/s10640-005-3792-9

G. W. Harrison, R. M. Harstad, and E. E. Rutström, Experimental Methods and Elicitation of Values, Experimental Economics, vol.7, issue.2, pp.123-140, 2004.
DOI : 10.1023/B:EXEC.0000026975.48587.f0

G. W. Harrison and E. E. Rutström, Chapter 81 Experimental Evidence on the Existence of Hypothetical Bias in Value Elicitation Methods, Handbook of Experimental Economics Results, pp.81-752, 2008.
DOI : 10.1016/S1574-0722(07)00081-9

N. Jacquemet, R. Joule, S. Luchini, and J. Shogren, Earned wealth, engaged bidders? Evidence from a second-price auction, Economics Letters, vol.105, issue.1, 2009.
DOI : 10.1016/j.econlet.2009.05.010

URL : https://hal.archives-ouvertes.fr/halshs-00429894

R. Joule and J. Beauvois, La soumission librement consentie, 1998.
DOI : 10.3917/puf.beauv.2010.01

R. Joule, F. Bernard, and S. Halimi-falkowicz, Promoting ecocitizenship : in favor of binding communication Forthcoming, International Scientific Journal for Alternative Energy and Ecology, 2007.

R. Joule, F. Girandola, and F. Bernard, How Can People Be Induced to Willingly Change Their Behavior? The Path from Persuasive Communication to Binding Communication, Social and Personality Psychology Compass, vol.1, issue.1, pp.493-505, 2007.
DOI : 10.1111/j.1559-1816.1990.tb00411.x

URL : https://hal.archives-ouvertes.fr/hal-00585299

J. Kagel, 9. Auctions A Survey of Experimental Research, Handbook of Experimental Economics, pp.501-585, 1995.
DOI : 10.1515/9781400883172-010

R. Katzev and T. Wang, Can commitment change behavior ? A case study of environmental actions, Journal of Social Behavior and Personality, vol.9, pp.13-26, 1994.

C. Kiesler, The psychology of commitment. Experiments liking behavior to belief, 1971.

C. Kiesler, R. Nisbett, and M. P. Zanna, On inferring one's beliefs from one's behavior., Journal of Personality and Social Psychology, vol.11, issue.4, pp.321-327, 1969.
DOI : 10.1037/h0027344

C. Kiesler and J. Sakumura, A test of a model for commitment., Journal of Personality and Social Psychology, vol.3, issue.3, pp.349-353, 1966.
DOI : 10.1037/h0022943

J. Knetsch, F. Tang, and R. Thaler, The endowment effect and repeated market trials: Is the Vickrey auction demand revealing?, Experimental Economics, vol.4, issue.3, pp.257-269, 2001.
DOI : 10.1023/A:1013221421382

D. M. Kreps, Intrinsic Motivation and Extrinsic Incentives, American Economic Review, vol.87, issue.2, pp.359-364, 1997.

J. Kulik and P. Carlino, The effect of verbal commitment and treatment choice on medication compliance in a pediatric setting, Journal of Behavioral Medicine, vol.3, issue.4, pp.367-376, 1987.
DOI : 10.1007/BF00846476

J. Laffont and D. Martimort, The Theory of Incentives: The Principal-Agent Model, 2002.

J. A. List and J. F. Shogren, Calibration of the difference between actual and hypothetical valuations in a field experiment, Journal of Economic Behavior & Organization, vol.37, issue.2, pp.193-205, 1998.
DOI : 10.1016/S0167-2681(98)00084-5

J. Lusk and J. Shogren, Experimental Auctions: Methods and Applications in Economic and Marketing Research, 2007.
DOI : 10.1017/CBO9780511611261

R. Mitchell and R. Carson, Using Surveys to Value Public Goods: The contingent Valuation Method. Resources for the Future, 1989.

J. J. Murphy, P. G. Allen, T. H. Stevens, and D. Weatherhead, A Meta-analysis of Hypothetical Bias in Stated Preference Valuation, Environmental & Resource Economics, vol.36, issue.3, pp.313-325, 2005.
DOI : 10.1007/s10640-004-3332-z

M. Pallack, D. Cook, and J. Sullivan, Commitment and energy conservation, Applied social psychology annual, vol.1, pp.235-253, 1980.

G. M. Parkhurst, J. F. Shogren, and D. L. Dickinson, Negative Values in Vickrey Auctions, American Journal of Agricultural Economics, vol.86, issue.1, pp.222-235, 2004.
DOI : 10.1111/j.0092-5853.2004.00574.x

C. Plott and K. Zeiler, The Willingness to Pay-Willingness to Accept Gap, the " Endowment Effect, Subject Misconceptions, and Experimental Procedures for Eliciting Valuations, pp.530-575, 2005.

E. E. Rutström, Home-grown values and incentive compatible auction design, International Journal of Game Theory, vol.27, issue.3, pp.427-441, 1998.
DOI : 10.1007/s001820050082

T. Schelling, The strategy of conflict, 1960.

H. J. Schlesinger, Promises, Oaths, and Vows: On the Psychology of Promising, 2008.

R. Seton, Notes on the Igala Tribe, Northern Nigeria, part II, Journal of the Royal African Society, issue.114, pp.29-149, 1930.

J. F. Shogren, M. Margolis, C. Koo, and J. A. List, A random nth-price auction, Journal of Economic Behavior & Organization, vol.46, issue.4, pp.409-421, 2001.
DOI : 10.1016/S0167-2681(01)00165-2

J. F. Shogren, S. Y. Shin, D. J. Hayes, and J. B. Kliebenstein, Resolving Differences in Willingness to Pay and Willingness to Accept, American Economic Review, vol.84, issue.1, pp.255-270, 1994.

V. Smith, Lightning Rods, Dart Boards, and Contingent Valuation, Natural Resources Journal, vol.34, pp.121-152, 1994.

B. Staw, Intrinsic and extrinsic motivation. General learning press module, 1976.

H. Sylving, The Oath: I, The Yale Law Journal, vol.68, issue.7, pp.1329-1390, 1959.
DOI : 10.2307/794369

C. Vanberg, Why Do People Keep Their Promises? An Experimental Test of Two Explanations, Econometrica, vol.76, issue.6, pp.1467-1480, 2008.

W. Vickrey, COUNTERSPECULATION, AUCTIONS, AND COMPETITIVE SEALED TENDERS, The Journal of Finance, vol.16, issue.1, pp.8-37, 1961.
DOI : 10.1111/j.1540-6261.1961.tb02789.x

T. Wang and R. Katsev, Group Commitment and Resource Conservation: Two Field Experiments on Promoting Recycling1, Journal of Applied Social Psychology, vol.13, issue.4, pp.265-275, 1990.
DOI : 10.1037/h0036195

R. Zeiliger, A presentation of Regate, Internet based Software for Experimental Economics, 2000.

M. Zuckerman, M. Lazzaro, and D. Waldgeir, Undermining Effects of the Foot-in-the-Door Technique with Extrinsic Rewards, Journal of Applied Social Psychology, vol.6, issue.3, pp.292-296, 1979.
DOI : 10.1037/h0076690