One explanation for the risk-taking peak that scientists have observed in adolescence is that
A. few or no adolescents are capable of conducting a cost-benefit analysis.
B. the prefrontal cortex is fully developed years before the limbic system is active.
C. adolescents tend to be higher in sensation seeking and impulsivity than children and adults are.
D. adolescents are not aware of the risks associated with certain behaviors.
Answer: C
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________ is the administration of an aversive stimulus, or the withdrawal of a reward, to decrease the frequency of an undesirable behavior
a. Induction c. Legitimate power b. Punishment d. Negative reinforcement
. A study by Johnson and colleagues examined the prevalence of dissociative disorders in an adult community sample. Based on the results, about 1 in ______ adults can expect to experience at least one of the dissociative disorders in a given year
a. 50 b. 25 c. 10 d. 8
Antipsychotic drugs were discovered accidentally when researchers were trying to develop:
A) antihistamines. B) analgesics. C) sedatives. D) antibiotics.
Which of the following supports the notion that impairment of the prefrontal cortex is related to the negative symptoms of schizophrenia?
a. MRI studies indicate abnormalities within the temporal cortex of schizophrenics. b. Schizophrenic patients show greater activity of the frontal cortex than do controls. c. Schizophrenic patients do poorly on neuropsychological tests that are sensitive to damage of the prefrontal cortex. d. MRI studies indicate abnormalities within the parietal cortex of schizophrenics. e. Schizophrenic patients show a greater number of neurons within the gray matter of the frontal cortex.