Implementation Details ====================== All three studies were approved by the local ethics committee of Göttingen University’s Psychological Department and conducted in accordance with the approved guidelines. Before conducting the studies, we obtained informed consent from all subjects. ________________________________________ Experimenters ------------- - Dorothee Mischkowski, M.Sc. Psychology, PhD student (3rd year) at Göttingen University with a research focus on cooperation behavior and social value orientation - Prof. Andreas Glöckner, head of department for Judgment, Decision Making, Action at University of Hagen and senior research fellow at the Max-Planck Insitute for Research on Collective Goods, Bonn. - Data collection was conducted by experienced research assistants (mainly undergraduate students), all German native speakers and familiar with conducting experiments on social dilemmas. They were overseen by Dorothee Mischkowski. ________________________________________ Setting/Lab/Equipment --------------------- Data collection of the online studies (Study 1 & 3) were conducted via Amazon Mechanical Turk / an online Panel provider, respectively. Data collection in the lab (study 2) took place in a computer lab with 12 cubicles, so that an anonymous setting of up to three Public Goods Games in parallel was assured. Participants had access to a Dell laptop with a 13" inch screen. Participants were positioned so that they could not see each other or the computers used by other participants. ---------- Picture of the lab in Goettingen which was used for data colection: [Lab][1] Picture of one of the cubicles with laptop: [Cubicle][2] ---------- [1]: https://www.dropbox.com/s/ud8muweg19na08t/Lab_Goettingen_II.jpg?dl=0 [2]: https://www.dropbox.com/s/7rimdfu0ew271qu/Lab_Goettingen_Laptop.jpg?dl=0