Make the stimuli stay after the keypress
I'm currently creating an online experiment using Opensesame. I'd like to make my images consistently show 1200ms (the image won't disappear if participants press the key within 1200ms). I referred to a previous discussion: https://forum.cogsci.nl/discussion/2750/how-to-make-the-blank-screen-stay-after-the-keypress. Then I programmed the experiment as follows:
sketchpad: image (duration = 0)
keyboard_response: timeout = 1200
sketchpad: image (duration = [timeLeft])
It works very well from the second trial to the last trial. However, during the first trial, the image still disappear when pressing the key. I checked the interval between trials and found the interval between trial1 and trial2 was different from others.
Does anyone know how to solve it? Thanks in advance!