Going back to a previous trial

[Michael]

Is this what you are after?

Move Forward & Backward through a Slideshow

I use PyschoPy 3 on Windows 10 and Mac OS, to run a simple “Dwell Time Paradigm.” We create slideshows of still images which participants advance at their own pace with a button or mouse press, and we measure the looking time for each image. I would like to allow participants to move forward and backward along the stream of still images. Normally our button press only advances to the next slide, but I want them to be able to go back to the previous slide. I imagine using some sort of loop an…