The relationship between intelligence and channel capacity
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For the past half century, psychologists have been intimately concerned with the definition and evaluation of intelligence. Much work has been devoted to the problem of identifying and measuring the basic elements of intelligence, and, more recently, it was observed that it is not profitable to identify general intelligence with intellectual ability, but that it must be thought of as part of a greater entity, the total personality with which it shares comroon elements (Fronra 6c Hartman, 1955). Thus, Wechsler (1959) operationally defines intelligence as "the aggregate or global capacity of the individual to act purposefully, to think rationally, and to deal effectively with his environment." It is the aggregate because it is composed of elements which, while not being completely independent, are qualitatively differentiable. Despite the fact that intelligence is not just the sum of intellectual abilities, the only way we have been able to evaluate it quantitatively is by measuring the various aspects of these abilities.