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If one area of the brain deserves the accolade of being enigmatic, it is the frontal lobes. This region forms the largest part of the human brain, making up nearly one third of the cerebral cortex. Although its prominence led many early researchers to suppose that the frontal lobes must play an important role in human intelligence, this was not substantiated, or at least supported, by most forms of psychometric testing. The frontal lobes were also implicated in emotional responding, a finding leading to the controversial development of frontal lobotomy during the 1940s and 1950s. This was a procedure many psychiatrists claimed at the time was not deleterious to the individual. Yet today, the consensus is entirely different for it is recognized that the ...

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