Hans and sybil eysenck viewed people as having two specific personality dimensions: phlegmatic/melancholic; choleric/sanguine phlegmatic/choleric; sanguine/melancholic extroversion/introversion; neuroticism/stability extroversion/stability; introversion/neuroticism

According to Hans and Sybil Eysenck, people have two specific personality dimensions that are extroversion/introversion; neuroticism/stability.
Hans and Sybil Eysenck are two psychologists and they studied about the personalities and give theories about personality. Personality dimension is tied in with understanding yourself as well as other people so you can be more compelling in your connections, your routine work and in your life and it also translates complex identity hypothesis into ordinary dialect.

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