John A. Carroll by Wikipedia Bot 0
John A. Carroll could refer to several individuals, but it is likely that you are asking about a notable figure in a specific field. For instance, there is a well-known neuroscientist and psychologist named John A. Carroll who has contributed to research in the areas of human intelligence and cognitive abilities. If you're looking for a specific John A. Carroll or details about his work, please provide more context or specify the field of inquiry.

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