Studies of monochorionic and dichorionic twins

a. offer further evidence of the role of the prenatal environment in schizophrenia.
b. suggest that schizophrenia is more heritable than previously thought.
c. indicate that the risk of developing schizophrenia is not altered by the prenatal environment.
d. establish that genetic relatedness to an affected individual has nothing to do with one's risk of developing schizophrenia.

a. offer further evidence of the role of the prenatal environment in schizophrenia.

Psychology

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The evidence supporting a clear boundary between personality traits and personality disorders

a. is not strong. b. has been published in peer-reviewed publications. has been well established. c. has been well established. d. shows the differences fully.

Psychology

In general, the __________ the US during maintenance, the __________ the CR during

extinction. a. less intense; stronger b. more intermittent; weaker c. more intermittent; stronger d. less intermittent; stronger e. more intense; stronger

Psychology