Behavioral and Brain Sciences

Open Peer Commentary
Saunders & van Brakel: Colour categorization

Unique hues

Alex Byrne a1 and David R. Hilbert a2
a1 Department of Linguistics and Philosophy, MIT, Cambridge, MA 02139
a2 Department of Philosophy, Princeton University, Princeton, NJ 08544


Saunders & van Brakel argue, inter alia, that there is “little evidence” for the claim that there are four unique hues (red, green, blue, and yellow), and that there are two corresponding opponent processes. We argue that this is quite mistaken.