Matching Depth-Rotated Faces at Varying Degrees of Physical Similarity

There is a clear perceptual component to Congenital Prosopagnosia (CP). Given a triangular array of three faces in a minimal match-to-sample test (Fig. 1), those who have difficulty in matching which of the two highly similar lower (test) faces is an exact match to the upper face (the sample), also score at the prosopagnosia end on all the standard tests of face recognition proficiency, such as the CFMT. But there is another perceptual component...