Three 5-year-old Japanese children with no meaningful words were the subjects of an intervention program. The subjects and therapists played the "shopping game" (in the first term) and the "riding car game" (in the second term) with rules within the subjects' cognitive ability and in a setting designed to facilitate…

Proposes analogy as the central mechanism of knowledge acquisition in formal domains. Discusses experimental data on preschoolers' knowledge of one-to-one correspondence and college students' understanding of force decomposition. Suggests that a knowledge base domain is a thematically organized knowledge structure and that thematic relations in a…