Figure 3
From: Own-race and own-species advantages in face perception: a computational view
(A–D.) Feature transfer effect. (A.) Asian and Caucasian face feature distributions (1st PCs) are compared by calculating the proportional overlap while varying the contour threshold of the distributions. (B.) Same as A with chimpanzee and human (Asian) faces. (C.) Direct comparison of PC overlap of face classes between races and species. The proportional overlap of both the species and race comparisons are plotted against each other. In a red-blue color graduation the contour threshold is indicated, ranging from .05 to .95. (D.) Minimal distance across classes. The minimal distance was calculated across classes for both the species and the race comparison in both directions (from class 1 to 2 and from class 2 to 1, see x and y axes). Notably, the minimal distance for the species comparison (blue) was larger than for the race comparison (red).
