121.Regarding genetic factors in schizophrenia, which of the following statements is FALSE?
A)When one identical twin has schizophrenia, the other twin has a 45% to 50% chance of having the disorder.
B)About 13% of people with a schizophrenic parent develop the disorder themselves.
C)The closer the genetic relationship a person shares with a schizophrenic, the greater the likelihood that the person will have or develop schizophrenia.
D)Investigators have identified a single gene that is responsible for creating a genetic predisposition for schizophrenia.
E)Heredity plays an important role in schizophrenia, but biological and environmental factors also play important roles.
122.Schizophrenia may involve imbalances in nerve pathways that utilize which neurotransmitter?
A)serotonin
B)melatonin
C)dopamine
D)norepinephrine
E)epinephrine
123.In the diathesis-stress model of explaining schizophrenia, which of the following factors would represent a psychosocial influence?
A)childhood brain damage
B)prenatal brain trauma
C)failure in school
D)loss of a loved one
E)being raised in an abusive family environment
124.In research on the diathesis-stress model of schizophrenia, which of the following represents the most likely diathesis?
A)brain abnormalities
B)genetic predispositions
C)stressful life experiences
D)psychosocial influences
E)biochemical imbalances
125.In explaining the development of schizophrenia, the diathesis-stress model emphasizes
A)the role of brain abnormalities.
B)the interaction of genetic predispositions and stress.
C)the role of stressful life experiences in creating a diathesis.
D)the role of psychosocial influences in creating a diathesis.
E)biochemical imbalances.
126.Based on the diathesis-stress model, which combination is associated with the highest potential for the development of schizophrenia?
A)a diathesis and high levels of life stress
B)a diathesis and low levels of life stress
C)absence of a diathesis and high levels of life stress
D)absence of a diathesis and low levels of life stress
E)a weak diathesis and a high level of stress
127.Based on available evidence, which of the following brain regions appears to be the most affected in cases of schizophrenia?
A)prefrontal cortex and limbic system
B)limbic system and hypothalamus
C)hypothalamus and medulla
D)medulla and prefrontal cortex
E)thalamus and medulla
128.The patterns of behavior in personality disorders are
A)highly resistant to change.
B)somewhat resistant to change.
C)somewhat easy to change.
D)relatively easy to change with psychotherapy.
E)relatively easy to change with drug treatment.
129.Personality disorders are a cluster of psychological disorders
A)involving extremely rigid patterns of behavior.
B)in which mood disturbances are the primary symptom.
C)which all include psychotic symptoms.
D)involving extreme anxiety.
E)in which cognitive distortions result in impaired functioning.
130.Regarding personality disorders, which of the following statements is FALSE?
A)Personality disorders are characterized by self-defeating patterns of behavior.
B)Personality disorders involve extreme variations of personality traits.
C)Borderline personality disorder is one of the least common types.
D)Antisocial personality disorder is one of the most common types.
E)People with personality disorders have deeply ingrained maladaptive personality traits.
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