7  Prolific

To facilitate the recruitment of participants via Prolific, one of the oTree authors released oTree HR.1 I strongly recommend to use that platform as it makes the recruitment really easy.

  1. Deploy your oTree app, e.g., oNovitas.otreezip via Heroku. Read Chapter 2 to learn how to do that.
  2. Create a session and copy the unique session id. Read Chapter 3 to learn how to do that.
  3. Create an oTree HR account.
  4. Add a new site via URL (https://[your app name].herokuapp.com).
  5. Your site should now be listed. Click on Prolific next to it.
  6. Enter the session id.
  7. The session should be listed in a table of Existing Sessions. Click on Configure next to the session you want to run.
  8. Log in to Prolific and click on Create a new study.
  9. Prolific’s interface will ask you about the URL of your study. Copy and enter the pink URL the oTree HR interface shows you into Prolific’s interface. Prolific should automatically check ‘I’ll use URL parameters’ for you.
  10. Prolific will ask you ‘How do you want to confirm participants have completed your study?’. Choose ‘I’ll redirect them using a URL’ and copy URL to redirect.
  11. Enter that so called completion URL into the field in oTree HR and click on update.
  12. Finish the remaining study configurations in Prolific.
  13. That’s it. oFeeds will pass the completion code to your survey tool (e.g., Qualtrics). Make sure that the tool is actually reading and using that parameter when a participant finishes the study.

  1. You can find the initial github repository here.↩︎