He was a German-British psychologist who proposed a model of personality based on three dimensions - extraversion/introversion, neuroticism/stability, and psychoticism/superego function.
This is a personality trait typified by outgoingness, high energy, and sociability.
This is a fundamental personality trait in the study of psychology characterized by anxiety, moodiness, worry, envy and jealousy.
This refers to a personality pattern typified by aggressiveness and interpersonal hostility.