Final answer:
Tom's behavior is most likely to be described by the Eysenck trait dimension of Introversion vs. Extraversion, which relates to sociability and the tendency to seek out or avoid social interaction. a) Introversion vs. Extraversion
Step-by-step explanation:
Of the Eysenck trait dimensions given, Tom's behavior is most likely to be described by the dimension Introversion vs. Extraversion. This dimension characterizes individuals based on their sociability and tendency to connect with others, with extroverts being sociable and outgoing, while introverts show a higher need to be alone and engage in solitary behaviors. The other listed dimensions such as Neuroticism vs. Emotional Stability and Psychoticism vs. Normality could also describe behaviors, but they relate to different aspects of personality such as emotional reactivity and impulse control, respectively.
According to the theory of Hans and Sybil Eysenck, the extroversion/introversion dimension is one of two primary personality dimensions they identified, alongside neuroticism/stability. These dimensions can be compared to the ancient Greek temperaments of melancholic, choleric, phlegmatic, and sanguine. Later, the Eysencks added a third dimension, Psychoticism vs. Superego Control, which relates to traits such as independence, hostility, and impulse control.