Hans Eysenck proposed that arousal states of the brain are the basis of extraversion citing the importance of all but which of the following systems?
a. Limbic system
b. Parasympathetic nervous system
c. Reticular activating system
d. Cortex
Answer: B
Rationale: Arousal states of the brain are the basis of extraversion and that the reactivity of the limbic system (the emotional circuits), reticular activating system, and cortex are correlated with extraversion.
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