How to set correctly mouse response
I have a sketchpad where there are 4 possibile response rapresented by 4 circles form bottom left to bottom righr in up of the slide. I want to set for each trial a correct response for the mouse response that correspond always for only one of those circles (obv depending on the trial request). How can i do it? For helping in these resolution i'm doing a stroop task where partcipant have to click on the circle that has the same colour of the word in the specific trial. What is the way to set the correct response?