An early study by Perky (1910) bears on this principle. Perky had participants images that they were looking at an object (such as a tomato, a banana, an orange, a leaf) with(ดูไม่ออก) staring at a blank screen. After they reported having formed the image, they were b…(ดูไม่ออก) distracted by one experimenter while another two experimenters operated and app…(ดูไม่ออก) that projected faint pictures of the objects the participants were imaging. Perky focuses…(ดูไม่ออก) that many of the participants were unable to distinguish between their own images …(ดูไม่ออก) the faint pictures. Presumably, this is because images share many similarities with …(ดูไม่ออก) picture.