Figure 5.

Comparison of expert and trained novice performance as a function of image. Images were ranked according to difficulty in the trained undergraduates. Although the experts substantially outperformed the trained novices (on almost every individual image), there is a clear correspondence between the images that experts and trained novices excelled at or struggled with. Below we provide examples of images (A) that experts were at ceiling performance on but which novices were very poor at; (B) that both experts and novices were poor at; and (C) that experts struggled disproportionately with as compared to novices.