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1、JournalofEnvironmentalEconomicsandManagement65(2013)110–132ContentslistsavailableatSciVerseScienceDirectJournalofEnvironmentalEconomicsandManagementjournalhomepage:www.elsevier.com/locate/jeemPreferenceelicitationunderoathabcd,nNicolasJacquemet,Robert-VincentJo
2、ule,Ste´phaneLuchini,JasonF.ShogrenaParisSchoolofEconomicsandUniversityParisIPanthe´on–Sorbonne,Centred’EconomiedelaSorbonne,106Bd.del’Hopital,ˆ75013Paris,FrancebLaboratoiredePsychologieSociale-EA849,UniversityofProvence,29,AvenueRobert-Schuman13621Aix-en-Prove
3、ncecedex1,FrancecGREQAM-CNRS,CentredelaVieilleCharite´,13236MarseilleCedex02,FrancedDepartmentofEconomicsandFinance,UniversityofWyoming,Laramie,WY82071-3985,UnitedStatesarticleinfoabstractArticlehistory:Elicitingsincerepreferencesfornon-marketgoodsremainachalle
4、ngeduetothediscrepencyReceived29November2010betweenhypotheticalandrealbehaviorandfalsezeros.ThegaparisesbecausepeopleeitherAvailableonline15June2012overstatehypotheticalvaluesorunderstaterealcommitmentsoracombinationofboth.Keywords:Hereinweexaminewhetherthetrad
5、itionalreal-worldinstitutionofthesolemnoathcanOathimprovepreferenceelicitation.Applyingthesocialpsychologytheoryontheoathasatruth-Commitmenttelling-commitmentdevice,weaskourbidderstoswearontheirhonourtogivehonestVickreyauctionanswerspriortoparticipatinginanince
6、ntive-compatiblesecond-priceauction.TheoathisHypotheticalbiasanancillarymechanismtocommitbidderstobidsincerelyinasecond-priceauction.ResultsInducedvaluesfromourinducedvaluationtestbedtreatmentssuggestthattheoath-onlyauctionsoutper-Homegrownvaluesformallourother
7、auctions(realandhypothetical).Inourhomegrownvaluationtreatmentselicitingpreferencesfordolphinprotection,theoath-onlydesigninducedpeopletotreatasbindingboththeirexperimentalbudgetconstraint(i.e.,lowervaluesonthehighendofthevaluedistribution)andparticipationconst
8、raint(i.e.,positivevaluesinplaceofthezerobidsusedtoopt-outofauction).Basedoncompaniontreatments,weshowtheoathworksthroughanincreaseinthewillingnesstotellthetruth,duetoastren
