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. 2019 Aug 15;9:11880. doi: 10.1038/s41598-019-48094-4

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Moral nudges increase altruistic behaviour in Dictator games. Results of Study 1 (N = 282). Subjects who are asked what they personally think is the morally right thing to do or what they think their society considers to be the morally right thing to do before playing a DG (i.e., subjects in the “DG nudged” condition), donate significantly more than subjects in the baseline DG (p = 0.005). The y-axis represents the average percentage of the endowment donated by subjects in the corresponding condition. Error bars represent +/− Standard Error of the Mean (SEM). We refer to the Supplementary Material, Table SM1, for regression details.