title: Concept development.
mesh_terms: D002648:Child; D002675:Child, Preschool; D003071:Cognition; D003118:Color Perception; D003201:Computers; D003210:Concept Formation; D003463:Cues; D006801:Humans; D008568:Memory; D008960:Models, Psychological; D010364:Pattern Recognition, Visual; D011582:Psychological Theory; D002666:Psychology, Child; D012660:Semantics; D012718:Set, Psychology