who believed that our personality traits are influenced by our genetic inheritance?

Hans and Sybil Eysenck are the psychologists who argued most directly that our personality traits are strongly influenced by our genetic inheritance.

Quick Scoop

• The Eysencks (Hans and Sybil) developed a biological trait theory of personality that emphasized inherited temperamental differences such as extraversion–introversion and neuroticism.

• They used twin and family studies to support the idea that a substantial portion of personality variation is heritable, meaning it runs in families through genes.

• Modern behavior genetics still finds that many core traits are moderately heritable, even though environment also plays a major role, so today’s view is more balanced than the original strong emphasis on heredity.

TL;DR: The classic textbook answer to “who believed that our personality traits are influenced by our genetic inheritance?” is Hans and Sybil Eysenck.

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