According to Hans Eysenck's Three-Factor or Biogenetic Theory of Personality, specifically the PEN model comprising 'Extraversion-Introversion', 'Neuroticism-Stability', and 'Psychoticism', if an individual exhibits a combination of high neuroticism and high introversion, which of the following statements is most authentic regarding the individual's behavior and bio-genetic predisposition, such as autonomic nervous system sensitivity?

Understanding Eysenck's PEN Model

Hans Eysenck proposed the biogenetic theory of personality (PEN Model), classifying personality primarily into three dimensions: Extraversion, Neuroticism, and Psychoticism.

According to Eysenck:

• Introverts naturally possess a high level of cortical arousal, causing them to avoid excessive sensory stimulation and social gatherings.
• High Neuroticism implies heightened reactivity of the autonomic nervous system, making individuals vulnerable to extreme anxiety, stress, and emotional instability.

Therefore, the combination of high introversion and high neuroticism makes an individual emotionally sensitive, anxious, and prone to mood disturbances.