Final answer:
Darren would be classified under the extroversion/introversion dimension of personality according to the Eysencks' personality theory.
Step-by-step explanation:
Based on the information provided, Tina classified Darren under the extroversion/introversion dimension of personality according to the Eysencks' personality theory. This dimension refers to whether a person is outgoing and sociable (extroversion) or reserved and introspective (introversion). The extroversion/introversion dimension of personality, a central aspect in theories like the Myers-Briggs Type Indicator, reflects preferences for social interaction and energy sources.
Extroverts thrive on external stimuli, enjoying social activities and engaging environments, while introverts prefer solitude and quiet spaces, gaining energy from reflection. This spectrum influences communication styles, work preferences, and overall behavior, contributing to diverse and dynamic personality traits.