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"Truth Telling Under Oath"

De Nicolas Jacquemet, Stéphane Luchini, Julie Rosaz, Jason F. Shogren, Management Science, INFORMS, 2019, 65 (1), pp.426-438


Nicolas Jacquemet, Stéphane Luchini, Julie Rosaz, Jason F. Shogren, Truth Telling Under Oath. Management Science, 2019, 65(1):426-438.



Résumé :


Oath taking for senior executives has been promoted as a means to enhance honesty within and toward organizations. Herein we explore whether people who voluntarily sign a solemn truth-telling oath are more committed to sincere behavior when offered the chance to lie.

We design an experiment to test how the oath affects truth telling in two contexts: a neutral context replicating the typical experiment in the literature, and a “loaded” context in which we remind subjects that “a lie is a lie.” We consider four payoff configurations, with differential monetary incentives to lie, implemented as within-subjects treatment variables. The results are reinforced by robustness investigations in which each subject made only one lying decision.

Our results show that the oath reduces lying, especially in the loaded environment—falsehoods are reduced by 50%. The oath, however, has a weaker effect on lying in the neutral environment. The oath did affect decision times in all instances: the average person takes significantly more time deciding whether to lie under oath.


DOI : 10.1287/mnsc.2017.2892

Appendix. Supplementary materials


Dépôt sur HAL  halshs-02018089


Funding from the Institut Universitaire de France and Agence Nationale de la Recherche (ANR) [Grant ANR-10-LABX-93-01 - OSE - Opening economics - Labex Ouvrir la Science Economique] and the Provence-Alpes-Côte-d’Azur Regional Council [Project ENGAIN].