Hello,
I want to program a temporal reproduction task and allow participants to press space bar to reproduce the time interval and with that there needs to be a rectangle on the screen that starts to appear when they press the space bar and disappear when they release the space bar. I am a beginner and I do not know how to use the rectangle shape stimulus like that.
And i also want to ask how would you give feedback to people on practice trials with this type of temporal reproduction task?
Thanks in advance.