Solutions of issues about using QUEST staircases for online studies

Online experiments
1

Hello, I want to share my understanding about how to properly set up QUEST staircases for online studies.

I had a very hard time when I was designing my experiment, as the instruction list on the website ( Flow — PsychoPy® ) do not always match how psychopy (more precisely, psychojs) actually implements QUEST. I then found out that some parts of page are misleading. So I investigated the source code to figure out how to actually set up online QUEST staircases properly. And I summarized my findings in this blog I wrote: Solutions of some issues of QUEST staircase for online Psychopy studies | Wei Wei

My blog covers three main problems:

  1. How to properly set the max trials for QUEST staircases?
  2. How to properly set the min and max values of the intensity level?
  3. How to terminate a QUEST staircase based on CI?

I provide solutions and explanations for each problem. I hope this can help people who are struggling with Quest just like I was.

Please feel free to comment or email me if I made any mistakes.

Thank you and good luck to all of you!

Wei