Final answer:
Eysenck would classify a melancholic personality type as introverted and unstable due to their higher level of neuroticism.
Step-by-step explanation:
Eysenck would classify a melancholic personality type as introverted and unstable.
According to Eysenck's theory, people with high neuroticism scores tend to be anxious and have an overactive sympathetic nervous system. These individuals are more likely to experience emotional instability and their bodies and emotional state have a tendency to go into a flight-or-fight reaction, even in low-stress situations. Melancholic personality type is associated with a higher level of neuroticism, which makes them introverted and unstable.