Reply to Claessens et al.: Maybe the Footbridge sacrifice is indeed the only one that sends a negative social signal

Proc Natl Acad Sci U S A. 2020 Jun 16;117(24):13205-13206. doi: 10.1073/pnas.2007044117.

Edmond Awad¹, Sohan Dsouza², Azim Shariff³, Iyad Rahwan^{4

5

6}, Jean-François Bonnefon⁷

¹ Department of Economics, University of Exeter Business School, Exeter EX4 4PU, United Kingdom; e.awad@exeter.ac.uk shariff@psych.ubc.ca rahwan@mpib-berlin.mpg.de jfbonnefon@gmail.com.
² The Media Lab, Massachusetts Institute of Technology, Cambridge, MA 02139.
³ Department of Psychology, University of British Columbia, Vancouver, BC V6T1Z4, Canada; e.awad@exeter.ac.uk shariff@psych.ubc.ca rahwan@mpib-berlin.mpg.de jfbonnefon@gmail.com.
⁴ The Media Lab, Massachusetts Institute of Technology, Cambridge, MA 02139; e.awad@exeter.ac.uk shariff@psych.ubc.ca rahwan@mpib-berlin.mpg.de jfbonnefon@gmail.com.
⁵ Centre for Humans & Machines, Max-Planck Institute for Human Development, Berlin 14195, Germany.
⁶ Institute for Data, Systems, and Society, Massachusetts Institute of Technology, Cambridge, MA 02139.
⁷ Toulouse School of Economics, Toulouse School of Management-Research, Centre National de la Recherche Scientifique, University of Toulouse Capitole, Toulouse 31015, France e.awad@exeter.ac.uk shariff@psych.ubc.ca rahwan@mpib-berlin.mpg.de jfbonnefon@gmail.com.

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