In a study of identical twins by the National Institute of Mental Health,when one twin had schizophrenia and the other did not,the schizophrenic twin always showed reduced activity in which lobe of the brain when compared to the unaffected co-twin?

Question

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The frontal lobe is responsible for higher cognitive functions such as decision making, reasoning, and problem solving. In individuals with schizophrenia, there is often a reduced activity in this area of the brain, which is believed to be related to the cognitive and behavioral symptoms of the disorder.

In a Study of Identical Twins by the National Institute