1 Center for Humans & Machines, Max Planck Institute for Human Development, Berlin 14195, Germany; rahwan@mpib-berlin.mpg.de crandall@cs.byu.edu jean-francois.bonnefon@tse-fr.eu.
2 Computer Science Department, Brigham Young University, Provo, UT 84602; rahwan@mpib-berlin.mpg.de crandall@cs.byu.edu jean-francois.bonnefon@tse-fr.eu.
3 Toulouse School of Economics, CNRS, Université Toulouse Capitole, Toulouse 31000, France rahwan@mpib-berlin.mpg.de crandall@cs.byu.edu jean-francois.bonnefon@tse-fr.eu.