I will present participants some pictures which include hidden patterns like faces or animals. I have 30 pictures and every picture has 10 degrades which gets easier and easier to see the hidden pattern. I have 30 blocks and 30 trials which of each have 10 events. I will present every event for 5 seconds and participant will respond when (s)he saw the hidden pattern. If (s)he doesn’t respond in 5 seconds, program will automatically present the next event (easier degrade).
I want participant to press “space bar” when he saw the pattern; program will save the RT; but the same picture will remain to be presented till participant respond. Because i’m going to ask them what they saw; and then it will be clear whether it is correct answer or not.
How can i do that? Is it possible to remain presenting the same event until a second response?