Which of the Following Findings Presents a Serious Challenge to the Theory

question 51

Multiple Choice

Which of the following findings presents a serious challenge to the theory of schizophrenia that proposes an excess amount of dopamine to be at the core of this disorder?

• A)Antipsychotic drugs relieve the symptoms of both drug psychoses and the psychosis of schizophrenia.
• B)Homovanillic acid,the major metabolite of dopamine,is not present in greater amounts in schizophrenics.
• C)Positive symptoms of schizophrenia are reduced by antipsychotic drugs more than negative symptoms.
• D)None of the above represents a challenge to the dopamine activity theory.