You are here: Aarhus BSS Cognition and Behavior Lab For Participants

For Participants

1. General Information

Our studies rely on participants, who will typically be engaged in either a computer task, a choice experiment or a group task (depending on the study). Studies are conducted by researchers across all four faculties at Aarhus University, resulting in studies that are interesting, diverse and exciting.

All students and members of the public have the opportunity to contribute to research by becoming participants, and at the same time earn money or other rewards. You must be at least 18 years old to sign up as a participant.

2. How to Participate

All you have to do is create an account on our online participation system. Subsequently, you can browse and sign up for studies that interest you. Here is a step-by-step guide of what to do:

  • To sign up as a participant, simply click 'Sign up here' (in the blue box on the right of this page).
  • You will then be taken to our research participation system. Click 'Request Account' (the orange box on the right, see figure below) and follow the instructions.

  • Once you have created an account within the participant system, you will be presented with your rights as a participant. Please read these carefully. On condition that you accept these terms you will then be able to view studies currently taking place.
  • Browse and sign up for studies. Each study will provide a brief description, location information, details of the reward and contact information of the lead researcher, in case you have any questions or concerns. Most of our studies take place at the Lab, but we also run online studies, and experiments in other locations around Aarhus and beyond.
  • Download the participant system app for iOS and Android devices in order to browse and sign up for studies from your smartphone or tablet. Click here for more information.

3. Remember Your Identity (ID) Code

Researchers at COBE Lab do not know you by name or your email address. They only know you by an Identity Code (ID Code). 

When you sign up for a study, the researchers of that study will see only your ID Code. It is therefore extremely important that you remember your ID Code. When you attend the study you will be asked for you ID Code. Please note this is not the same as your User ID. 

Your ID Code is generated by the Cognition and Behavior Lab Participation System automatically, and not by you. You can not change your ID Code.

To find your Identity (ID) Code:

  1. Log in to the participant system with your User ID (not ID Code) and password. 
  2. Click My Profile in the upper right.
  3. You will see a four or five digit number corresponding to Identity Code. Underneath this number it is stated that "Researchers will see only this code, and never your name". This is your ID Code. In the below example you will that the ID Code is 20584. If you have any questions please mail
  4. When you sign up for a study you will receive an email confirmation. Your ID Code can also be found in this email confirmation. 

4. Payment


Depending on the study you may be rewarded either in cash, by electronic bank transfer, by receiving a gift voucher/cinema ticket or by receiving an item such as a bottle of wine. Payments will typically be via electronic bank transfer, in cash or via a gift voucher.

In order to receive payments via electronic bank transfer, most studies will require you to have a NemKonto Easy Account. Foreigners with a Danish social security number (CPR-number) are encouraged to nominate a Danish bank account as their NemKonto Easy Account. For more information, please visit the NemKonto site. If you do not have a NemKonto Easy Account it is likely that you will not qualify to participate in certain studies. We aim for payments via bank transfer to be within two–six weeks after your participation. If you participate in more than study a month that uses bank transfer, payments will be merged together into one monthly transaction (i.e., you will not see one record per study, but rather one entry),

Please note that Aarhus University automatically reports such earnings to the tax authorities, and therefore it is likely you will pay tax on earnings from studies. Payment values stated on our participant system are gross pay values, and not net pay. All earnings are classed as B-income. 

You can contact the Lab by email (, should you have any concerns. You can contact the Lab by email (, should you have any concerns.