AS Level Psychology (9990) Case Studies Practice Exam

In this kind of task, two timing elements matter: how long each image stays on screen (stimulus duration) and how long the blank period with the fixation point lasts between images (the inter-stimulus or fixation interval). The correct option sets the image to be shown for a brief, controlled 2.88 seconds, which gives enough time to perceive and encode the image without encouraging prolonged viewing or rehearsal. The fixation interval is then much longer at 12.96 seconds, providing a solid pause between images so attention can reset, interference from the previous image is minimized, and each trial can be treated as independent. So, showing images for 2.88 seconds and having a 12.96-second fixation interval best fits a design aiming for clear, separated encoding of each image.