How to set a fixed response time window to prevent the target from disappearing immediately

Aroundight

Hello,

I'm trying to design an experiment that requires recording the reaction time (RT) of participants after they see a target. However, I need to keep the total duration of each trial fixed. My initial idea was to use a Sketchpad to present the target with a duration set to 0. Then, I added a Keyboard_Response element with a timeout set to 2000ms. After that, I added another Sketchpad, identical to the target, with the duration set to 2000 - {response_time}. However, the system is showing an error. I would like to ask how I can achieve my goal.

eduard

Hi,

Check out co-routines. They were designed for exactly this usecase:

https://osdoc.cogsci.nl/4.0/manual/structure/coroutines/

Good luck,

Eduard