Chester is irritable and grouchy most of the time. He really doesn't like when new people pick him up and hold him. What temperament does he exhibit?

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)

When Nand feels angry, he goes home and listens to heavy metal music. According to research, if Nand is typical of adolescent heavy metal fans, which of the following may we predict is the most likely effect? After listening to the music for a while, Nand

a. calms down. b. feels angrier. c. writes a song. d. withdraws.