You are observing the overall arousal level in an individual's cortex. It seems to be the case that this person is underaroused-the overall level is way below optimum. According to Eysenck's approach to personality traits and biological factors, this person is likely to be

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Eysenck's theory suggests that extraverts have lower levels of cortical arousal and seek external stimulation to increase their arousal levels to an optimal level, whereas introverts have higher levels of cortical arousal and thus avoid additional external stimulation. Therefore, a person who is underaroused is likely to be an extreme extravert according to Eysenck's approach.

You Are Observing the Overall Arousal Level in an Individual's