  Donaldson (1978) offers a psychological critique of Piaget on cognitive development. A philosophical critique of Piaget’s work on cognitive development is to be found in Chapters 3 and 4 of Matthews (1994). Interesting post-Piagetian work in cognitive development includes Cary (1985), Wellman (1990), Flavel (1995), Subbotsky (1996), and Gelman (2003).