Final answer:
Hans and Sybil Eysenck introduced the personality dimension of psychoticism versus superego control, delineating characteristics of individuals high in each trait.
Explanation:
The third personality dimension eventually proposed by Hans and Sybil Eysenck was psychoticism versus superego control. In this dimension, individuals high in psychoticism tend to exhibit qualities such as independence, coldness, nonconformity, impulsiveness, antisocial behaviors, and hostility. On the other hand, those high in superego control display traits like high impulse control, altruism, empathy, cooperativeness, and conventionality.
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