How to dynamically generate stimuli based on subjs' prior responses?

[jonathan.kominsky]

https://www.psychopy.org/recipes/builderFeedback.html

Presentation of picture based on previous response

Hi! So far, I’ve only built experiments in the Builder, but I think what I need now is the coder. So, it’s a simple picture selection task. 2 pictures are displayed on the screen. If the participant chooses one of them, the chosen picture needs to be displayed in the next screen together with a new picture, etc. I think you can’t design it in the builder. As for the Coder, the way I see it is that in the beginning of the routine I would need to create some variable ‘chosen_pic’, and at the end …

How to randomize feedback or create conditional feedback

Hello, I am trying to create conditional feedback for my experiment, I usually use the builder so writing the code for this has been a little bit more complicated than I hoped. The goal is for on some trials, the participant sees “correct” or “incorrect” based on how they responded. I have this working properly. But, I also need it on some trials (randomly) to not say anything at all, no feedback. I’m not sure in python or JS how to make this work. Initially, I was thinking I could add a colum…

Generally speaking what you’re doing is the same as making a feedback trial, but instead of providing feedback you’re just taking the response and using it to fill in a stimulus. It should be fairly straightforward to use code components and either store the response to a separate variable, or actually access the data from the previous trial directly (the first link shows how to do this in Python, and the auto->JS translator in the code component can probably make it work the same way online as well).