The data from studies of the biological and adoptive parents of children who receive a diagnosis of schizophrenia as adults show that the concordance rate of schizophrenia with biological relatives is:
a. higher than with adoptive relatives.
b. a direct function of the age at adoption.
c. lower than with adoptive relatives.
d. equally low with both biological and adoptive relatives.
The data studies of the biological and adoptive parents of children who receive a diagnosis of schizophrenia as adults show that the concordance rate of schizophrenia with biological relatives is higher than with adoptive relatives.
