Past research has found that mere in‐group/out‐group categorizations are sufficient to elicit biases in face memory. The current research yields novel evidence that mere social categorization is also sufficient to modulate processes underlying face perception, even for faces for which we have strong perceptual expertise: same‐race (SR) faces. Using the composite face paradigm, we find that SR faces categorized as in‐group members (i.e., fellow university students) are processed more holistically than are SR faces categorized as out‐group members (i.e., students at (...) another university). Hence, holding perceptual expertise with faces constant, categorizing an SR target as an out‐group member debilitates the strong holistic processing typically observed for SR faces. (shrink)

We show how an epistemology informed by cognitive science promises to shed light on an ancient problem in the philosophy of mathematics: the problem of exactness. The problem of exactness arises because geometrical knowledge is thought to concern perfect geometrical forms, whereas the embodiment of such forms in the natural world may be imperfect. There thus arises an apparent mismatch between mathematical concepts and physical reality. We propose that the problem can be solved by emphasizing the ways in which the (...) brain can transform and organize its perceptual intake. It is not necessary for a geometrical form to be perfectly instantiated in order for perception of such a form to be the basis of a geometrical concept. (shrink)