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Patterns of cognitive development from the age of 8 to 16 years: A, WISC-III vocabulary raw score; B, WISC-III block-design raw score. Raw scores of term children are indicated with the bold line. The shadow represents CIs. Subgroups A and A* show similar patterns of cognitive development to the term cohort. Subgroup C also is catching up to the term group by the age of 16 years.
