Which of the following was presented in the text as evidence of biological influences on anxiety disorders?

Question

Quizplus · Accepted Answer

All three of these findings were presented as evidence of biological influences on anxiety disorders. Identical twins often develop similar phobias, suggesting a genetic component to anxiety disorders. Brain scans of persons with obsessive-compulsive disorder reveal unusually high activity in the anterior cingulate cortex, demonstrating a neurological basis for the disorder. Drugs that reduce fear-circuit activity in the amygdala can alleviate OCD symptoms, indicating the role of neurotransmitters in anxiety disorders.

Which of the Following Was Presented in the Text as Evidence