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Aiming (Eye-hand Coordination) (12) VJ. T2 er Flexibility of Closure (12) VJ. T3 C Speed of Closure (12) VJ. T4 D Deduction (12) VJ. TS I Induction (12) VJ. T6 If Ideational Fluency! (12) VJ. T7 Ma Associative Memory (12) VJ. T8 Mk Mechanical Knowledge (12) u.I.
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Raymond B. Cattell (1957) studied this question.
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