Dear Madam or Sir:

The following study is part of a research project by students of the University of Mannheim in Germany. It is part of an experimental practicum course about decision-making processes. The goal is to find out more information about how humans make decisions in various situations. There is a possibility that you will be connected to another player, who is also playing the game. What will take place during the game will be explained in the following instructions. Taking part in this study is voluntary and you may cease participation at any time. Participating in the study will take about 30 minutes. If you use a phone or a tablet now, we do not recommend you to participate in the experiment. Since this experiment was designed for a web-browser, the best user experience is possible on a desktop computer or a laptop.

Data processing

Your answers and decisions will be analysed and reported anonymously. No information about your identity will be associated with your answers. There are no known physical, social, or legal risks involved in the study. The study employs variants of survey questions and experimental tasks that have been widely used in previous studies. By pressing the continue button below, you agree that you have read this information and have accepted to proceed with the experiment. You may choose to receive a full description and rationale for this study, by e-mailing your request to expragame.mannheim@gmail.com (Subject: Online Study).


Take part in this game before the 2nd of May, 2016 and win a great prize! The prize would be drawn at random among the participants with the ten best results. The winner of this lottery will get one of the boxes from this game, but the content of the boxes will be a surprise. This box will be shipped to the winner independently on her or his location. To participate in the lottery, please leave your email at the end of the game. So, take part in this survey and win, win, win!