Personality: Theories & Types
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With reference to Hans Eysenck's three-factor (PEN model) theory of personality, when micro-analyzing the biological and genetic bases of 'Psychoticism', 'Extroversion', and 'Neuroticism', which of the following statements most accurately defines the essential nature and neuro-chemical determinants of these three dimensions?
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Detailed Explanation
According to Hans Eysenck's theory of personality, the biological basis of extroversion is linked to the Reticular Activating System (RAS) and cortical arousal. Extroverts typically possess a lower baseline level of cortical arousal, prompting them to seek external stimulation to reach an optimal level of arousal.
Key Concepts
- Extroversion: Associated with cortical arousal and the ascending reticular activating system (ARAS).
- Neuroticism: Linked to the stability of the autonomic nervous system (ANS), specifically sympathetic reactivity.
- Psychoticism: Associated with vulnerability to psychotic disorders, often correlated with hormonal factors like testosterone and neurotransmitters such as dopamine.
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