Perseveration in decision-making reflects injury to
a) vestibular hair cells
b) long-term potentiation
c) prefrontal cortex
d) bipolar depression
Saying that schizophrenia has a genetic basis means that
a) there is a gene that is responsible for schizophrenia
b) schizophrenic parents will have schizophrenic children
c) a twin of a schizophrenic person has a greater than average chance of developing schizophrenia
d) some races are more schizophrenic than others
Research on the genetics of drug dependence indicates that
a) alcoholism and smoking are independent diseases
b) alcoholism and smoking share common genetic factors
c) smokers are high in status and achievement, but low in sensation seeking
d) alcoholics are high in status and achievement, but low in sensation seeking
Which of the following is strong evidence for a genetic contribution to a behavior?
a) Dizygotic twins haved a higher concordance rate than do monozygotic twins.
b) Monozygotic twins have a higher concordance rate than do dizygotic twins.
c) Heterozygotic twins have a lower concordance rate than do monozygotic twins.
d) Adopted children resemble their adopted families wth regard to a trait.
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