Why Is It Particularly Useful to Study Identical Twins Who

question 46

Multiple Choice

Why is it particularly useful to study identical twins who were raised in different environments?

• A) Differences in brain function can easily be identified.
• B) Concordance rates tend to be higher.
• C) It is possible that the genetics of twins who have been separated have changed in ways to explain any differences found.
• D) It is possible that high concordance rates between identical twins reared together is due to their being treated more similarly than nonidentical twins.

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Definitions:

Posttraumatic Stress Disorder

A psychiatric disorder that can occur in people who have experienced or witnessed a traumatic event, characterized by severe anxiety, flashbacks, and uncontrollable thoughts about the event.

Increased Arousal

A condition of heightened physiological and psychological activity or alertness, often as a response to stress or threat.

Avoidance

A defense mechanism or behavior aimed at evading a thought, task, or situation perceived as harmful or uncomfortable.

Sympathetic Nervous System

Part of the autonomic nervous system that activates the body's fight-or-flight response during stressful situations.