Hans Eysenck
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Hans Jürgen Eysenck was a German-born British psychologist. He is best remembered for his work on intelligence and personality, although he worked on other issues in psychology. At the time of his dea
Eysenck sometime between 1965 and 1975
With his wife Sybil
Extraversion and introversion are a central trait dimension in human personality theory. The terms were introduced into psychology by Carl Jung, though both the popular understanding and current psych
Hans Eysenck
…biological unit which is inherited as a whole....neurotic predisposition is to a large extent hereditarily determined." The two personality dimensions extraversion and neuroticism were described in his 1947 book Dimensions of Personality. It is common practice in personality psychology to refer to the dimensions…
Twin studies indicate that extraversion-introversion has a genetic component