Which situation is most consistent with the results of twin studies of schizophrenia?
A) When both twins carry the gene for schizophrenia, only one will develop symptoms.
B) Schizophrenia is more likely to materialize in a twin who experiences extreme stress.
C) Twins who inherit the gene for schizophrenia very rarely present symptoms of the disorder.
D) Having a father with schizophrenia greatly increases the chance that male twins will develop the disorder.

Question

Quizplus · Accepted Answer

Twin studies of schizophrenia have shown that while genetics play a significant role in the risk of developing the disorder, environmental factors such as extreme stress can also influence whether a genetically predisposed individual will manifest symptoms. This highlights the importance of both genetic and environmental factors in the development of schizophrenia.

Which Situation Is Most Consistent with the Results of Twin