Changing the Presentation Positions of Target Stimuli
As a part of my research project, I am going to use a version of the dot-probe task to measure attentional adhesion on different types of stimuli. The sequence of this task is as follows: 1) A fixation cross appears in the center of the screen, 2) Target stimuli appear in one quadrant of the screen, 3) Concurrent with the disappearance of the target stimuli, a categorization object (circle or square) appears in either the same quadrant as the target (i.e., filler trials) or in a different quadrant (i.e., attentional shift trials), 4) When categorization object appears, participants' task is to categorize the object as a circle or square, by pressing the pre-defined keys on the keyboard. The important thing is to present both the target stimuli and trial type randomly.
Here is the problem that I am trying to deal with: I could not figure out how to change the presentation positions of the target stimuli and categorization object. Should I specify four different position coordinates in the loop for each of the quadrants (e.g., -480, -280 for the top-left quadrant)? I will be grateful if you have any suggestions 🙏
Thanks a lot for allocating your time! 🐝