What is the best argument that environmental factors play some role in schizophrenia?
A. The risk for development of schizophrenia in identical twins is less than 100%.
B. The risk for development of schizophrenia in fraternal twins is less than 100%.
C. Drug treatments are effective in reducing positive symptoms.
D. Schizophrenia appears to run in families.
Answer: A
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a. True b. False Indicate whether the statement is true or false
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