Evidence that environmental factors play a role in the etiology of schizophrenia is that the concordance rate for identical twins is
A) greater for males than for females.
B) much less than 100.
C) much more than 50.
D) more than for dizygotic twins.
E) greater among cocaine users.
Question 2
Catatonic schizophrenic patients often experience a unique symptom when somebody moves them:
A) visual hallucinations.
B) waxy flexibility.
C) auditory hallucinations.
D) total rigidity.
E) tremors.