In my experiment, I present participants with a picture for a fixed duration (500msec) and this is followed by a blank screen to allow participants enough time to respond. Participants sometimes respond before the end of the picture presentation, and sometimes after, and I am not sure how to allow a response to occur EITHER during the presentation of the picture OR during the following blank screen. Any suggestions would greatly be appreciated.
If I’m understanding the question correctly, you don’t want the second event to be presented if the participant responds during the picture presentation. If so, you can accomplish that by using the feedback mechanism in SuperLab.