A series of experiments revealed that noun-category bias in children's word learning is present as early as two years of age. Findings indicate that, when children interpret the meaning of novel nouns, they do not sample randomly from the range of possible meanings but focus instead on category relations. (RH)

Findings suggest that semantic knowledge for concrete objects is represented and organized in similar ways in autistic, retarded, and normal children. Previous findings on cognitive deficits in autistic children are more likely related to their inability to use cognitive representations in an appropriate and flexible manner. (Author/RH)