Register as a potential participant in an economics experiment.

**REGISTER on hroot NOW**

Click above or on the QR code on the right.

EXEC maintains a register of potential participants. This register is called hroot (Hamburg Registration and Organization Online Tool). If you are interested in principle in participating in our experiments, we would first ask you to register on hroot by clicking on the link above. or by clicking on the QR code on the right.
When we are running particular experiments, we will send out an invitation to people on the hroot register asking them whether they wish to participate in the experiment. Usually we will give information as to how long the experiment will last and how much you might earn. In all our experiments we pay participants - the amount depending on what the participant does, sometimes on chance and sometimes on what the other participants do. We calibrate our experiments so that participants on average earn somewhat more than the living wage.
We should note that all of our experiments respect the ethical rules of the University.
You will be asked to solve some decision problem (in an economics context), usually interacting via a computer.
Earnings are paid using PayPal (which takes no commission) immediately after the end of the experimental session.