What behavioral changes are thought to occur when the brain's activity shifts from the limbic system to the prefrontal cortex in adolescence and early adulthood?
behavior
a gradual shift toward deliberate and thoughtful behavioral control
a change in short-term memory capacity
an increase in sensation seeking
A gradual shift toward deliberate and thoughtful behavioral control
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Although bulimia nervosa is often referred to as the "binge-purge" disorder, this is misleading because
a. it is not really a disorder; most people binge at least occasionally. b. there are other ways to compensate for binges that don't involve purging. c. some individuals with bulimia nervosa overeat frequently but not always in the form of a binge. d. bulimia nervosa involves bingeing or purging, but not both.
Dr. Smith believes that a decrease in frontal lobe function underlies the cognitive deficits seen in schizophrenia. He has hypothesized that effective drug therapy serves to selectively increase metabolic activity in this part of the brain. Which of the following is Dr. Smith most likely to use to test his hypothesis?
A. Computed tomography (CT) scans B. Magnetic resonance imaging (MRI) C. Positron emission tomography (PET) scans D. An electroencephalogram (EEG)