Does this mouse component work as expected on a computer?
The tablet you are using may not be recording clicks correctly. If that is the case, then you could instead have the following code:
Begin Routine
mouseRec = mouse1.getPos()
response = 0
Each Frame
mouseLoc = mouse1.getPos()
if t < .05:
pass
elif mouseLoc[0] != mouseRec[0] or mouseLoc[1] != mouseRec[1]:
mouseRec = mouseLoc
if img1.contains(mouse1):
response = 1
continueRoutine = False
elif img2.contains(mouse1):
response = 2
continueRoutine = False
elif img3.contains(mouse1):
response = 3
continueRoutine = False
elif img4.contains(mouse1):
response = 4
continueRoutine = False