Opt out of the research log

Pressing the button sets a cookie called dcu_optout in this browser. While it is there we do not write your practice events to the research event log: no timing, no confidence, no flags, no exam date, no outcome. You can keep practicing. Your answers are still saved, with the random id in your browser or with your account, because the tool needs them to pick your next question and show your score. To have them deleted, delete your account or send a request at /data-request.

The full list of what is recorded is on the what we keep page.