Studies with schizophrenic twins show that __________.

A) genetic factors play a minor role in schizophrenia
B) identical twins have a higher concordance rate for schizophrenia than do fraternal twins
C) identical twins are more likely to become schizophrenic than fraternal twins
D) none of the above

Concordance Rate

The probability that a person with a particular familial relationship to a patient (e.g., an identical twin) has the same disorder as the patient.

Schizophrenic Twins

Refers to twin studies involving individuals with schizophrenia, which are used to understand the contribution of genetic and environmental factors to the disorder.

Genetic Factors

Elements of an organism's genetic makeup that influence its physical or behavioral traits, contributing to hereditary characteristics.