Identify a true statement about H. J. Eysenck's theory of personality.
A) Extraverts have higher resting levels of cortical arousal.
B) Introverts and extraverts differ in their nervous system responsiveness to moderate levels of stimulation.
C) Extraverts show larger or faster arousal responses than introverts even to mild levels of stimulation.
D) Introverts and extraverts differ significantly in their level of brain activity while sleeping.
