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Hans Jürgen Eysenck, PhD, DSc (; 4 March 1916 – 4 September 1997) was a German-born English psychologist who spent his professional career in Great Britain. He is best remembered for his work on intelligence and personality, although he worked in a wide range of areas within psychology. At the time of his death, Eysenck was the living psychologist most frequently cited in the peer-reviewed scientific journal literature.
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