Looks like the claim was from Gärdenfors’s book, which gives the cites
Carey, S. (1985). Conceptual change in childhood. Cambridge, MA: MIT Press.
Clark, E. V. (1972). On the child’s acquisition of antonyms in two semantic fields. Journal of Verbal Learning and Verbal Behavior, 11, 750–758.
(no idea why I had a 1978 in my post)
Looks like the claim was from Gärdenfors’s book, which gives the cites
Carey, S. (1985). Conceptual change in childhood. Cambridge, MA: MIT Press.
Clark, E. V. (1972). On the child’s acquisition of antonyms in two semantic fields. Journal of Verbal Learning and Verbal Behavior, 11, 750–758.
(no idea why I had a 1978 in my post)