Which statement best answers the question, "Do environmental factors cause schizophrenia?"
A) "Concordance rates are less than 50 percent in identical twins, and therefore, environmental factors must play a causal role."
B) "Environmental factors such as poor family communication are usually caused by schizophrenia, not the other way around."
C) "There is little evidence that environmental factors contribute to the disorder."
D) "If environmental influences play a causal role, it is probably in adulthood, close to the time when symptoms first appear."

Question

Quizplus · Accepted Answer

Environmental factors are implicated in the development of schizophrenia because concordance rates for identical twins (who share the same genes) are less than 100%, suggesting that non-genetic factors also play a role.

Which Statement Best Answers the Question, "Do Environmental Factors Cause