Hans Eysenck
Hans Jürgen Eysenck (/ˈaɪzɛŋk/; 4 March 1916 – 4 September 1997) was a psychologist born in Germany, who spent his professional career in Great Britain. He is best remembered for his work on intelligence and personality, though he worked in a wide range of areas. At the time of his death, Eysenck was the living psychologist most frequently cited in science journals.