Sammy is shown a photograph of a salesclerk working at a sales counter in a clothing store, and behind the clerk are shelves stocked with white shirts. He is then shown an identical photograph, except now the shirts are blue. When asked if he notices any differences between the two photographs, Sammy indicates they are the same. This example illustrates ______.
change blindness
attentional capture
attentional incapacity
failed stimulus salience
