Which of the following are mentioned as personality dimensions by Eysenck?

A. Emotional Stability
B. Agreeableness
C. Introversion
D. Neuroticism

Correct option is B

Eysenck’s Three-Factor Model of Personality highlights the following major dimensions:

1. B. Agreeableness:

• Reflects the tendency to be cooperative, kind, and warm in interpersonal relationships.

2. C. Introversion:

• A personality trait characterized by inward-turning focus, preference for solitude, and less social interaction. Introversion is contrasted with extraversion in Eysenck's theory.

3. D. Neuroticism:

• Represents emotional instability, including anxiety, mood swings, and susceptibility to stress.

Information Booster: 

Hans Eysenck’s Three-Factor Model of Personality (PEN Model) proposes that personality traits have a biological basis, linked to specific brain structures and neurotransmitter activity.

1. Extraversion (E) – Brain Arousal & Reticular Activating System (RAS)

• Brain Area:Reticular Activating System (RAS) in the Brainstem

• Neurotransmitter Involvement:Dopamine (Reward System)

• Explanation:

• Extraverts have lower baseline arousal in the RAS, making them seek stimulation (e.g., socializing).

• Introverts have higher baseline arousal, making them more sensitive to stimulation and preferring quiet environments.

2. Neuroticism (N) – Emotional Reactivity & Limbic System

• Brain Areas:Limbic System (Amygdala, Hippocampus, Hypothalamus)

• Neurotransmitter Involvement:Serotonin & Norepinephrine

• Explanation:

• High neuroticism is linked to greater limbic system activation, leading to heightened emotional responses, anxiety, and stress reactivity.

• Low neuroticism individuals have a more stable autonomic nervous system, reducing stress sensitivity.

3. Psychoticism (P) – Impulsivity & Aggression

• Brain Areas:Prefrontal Cortex & Amygdala

• Neurotransmitter Involvement:Low Serotonin & High Testosterone

• Explanation:

• High psychoticism is associated with low serotonin, leading to impulsivity and aggression.

• Dysfunction in the prefrontal cortex reduces impulse control.

Additional Information:

• A. Emotional Stability:

• Although related to neuroticism, Eysenck did not explicitly list emotional stability as a separate dimension. It is rather the inverse of neuroticism.