Hans Eysenck

Hans Jurgen Eysenck (b. 1916–d. 1997) was a towering figure in personality psychology, notable for the audacity of his theorizing, the expansive scope of his empirical research, and the often-controversial views he expressed. Eysenck was the most significant figure in the history of British psychology by almost any measure. He is also likely to remain so because historical circumstances ensured he had an impact on a developing discipline that can never be duplicated. Eysenck was born in Berlin in 1916 at the height of the Great War, the only child of German film and stage performers Ruth Werner (aka Helga Molander) and Eduard Eysenck. The toxic prewar political climate in Germany saw him emigrate to England in 1934 soon after finishing secondary school. Almost by accident, Eysenck took up psychology at University College, London, and was mentored by Cyril Burt. He was almost interred as an enemy alien during the early stages of the war but was subsequently recruited by Aubrey Lewis in 1942 to lead the psychology program at Mill Hill Emergency Hospital – which functioned as the relocated Maudsley Hospital at the time. After the war, Lewis founded the Institute of Psychiatry, adjacent and affiliated with the Maudsley in south London. By 1955, Eysenck was made full professor within an independent psychology department at the institute and remained there for the rest of his career. Eysenck took the individual differences approach pioneered by Spearman and Burt to a new level. He developed a distinctively programmic approach that began with his derivation of three key dimensions of personality: neuroticism, extraversion, and psychoticism. Much of Eysenck’s later research explored how these dimensional differences played out across a wide variety of areas. Eysenck also attempted to give his personality dimensions a neurobiological basis. Eysenck’s research legacy was assured by his huge output—at least eighty-five books and more than a thousand scientific papers, many highly cited. He also laid the blueprint for the development of clinical psychology in Britain, founded several journals and professional associations, and trained many students. Yet Eysenck was full of contradictions. He advocated a no-nonsense, empirical rigor, but his critics came to distrust the numbers he presented. He consistently lambasted psychoanalysis at the height of its mainstream influence but took fringe areas such as astrology, ESP, and parapsychology seriously. For much of his career, this quiet, introverted man was the public face of the discipline in Britain. Many of his books were geared to popular audiences. However, Eysenck’s late career interventions in the race and IQ debate and the smoking and health issue would cement his polarizing reputation as a fearless, if politically incorrect, controversialist.