Hans Eysenck
Hans Jürgen Eysenck

(1916 -03-04)4 March 1916
Died4 September 1997(1997-09-04) (aged 81)
London, England
Alma materUniversity College London
Known forIntelligence, personality psychology, Eysenck Personality Questionnaire, differential psychology, education, psychiatry, behaviour therapy
Scientific career
InstitutionsInstitute of Psychiatry
King's College London
ThesisAn experimental and statistical investigation of some factors influencing aesthetic judgment (1940)
Doctoral advisorCyril Burt
Doctoral studentsJeffrey Alan Gray, Donald Prell

Hans Jürgen Eysenck[1] (/ˈzɛŋk/ EYE-zenk; 4 March 1916 – 4 September 1997) 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.[2][3] At the time of his death, Eysenck was the most frequently cited living psychologist in the peer-reviewed scientific journal literature.[4]

Eysenck's research purported to show that certain personality types had an elevated risk of cancer and heart disease. Scholars have identified errors and suspected data manipulation in Eysenck's work, and large replications have failed to confirm the relationships that he purported to find. An enquiry on behalf of King's College London found the papers by Eysenck coauthored with Ronald Grossarth-Maticek to be "incompatible with modern clinical science",[5] with 26 of the joint papers considered "unsafe".[clarification needed][6][7][5] Fourteen papers were retracted in 2020, and over 60 statements of concern were issued by scientific journals in 2020 about publications by Eysenck.[5] David Marks and Rod Buchanan, a biographer of Eysenck, have argued that 87 publications by Eysenck should be retracted.[8][5]

During his life, Eysenck's claims about IQ scores and race, first published in 1971, were a significant source of controversy.[9][10] Eysenck claimed that IQ scores were influenced by genetic differences between racial groups. Eysenck's beliefs on race have been discredited by subsequent research, and are no longer accepted as part of mainstream science.[9][10]


With his wife Sybil

Eysenck was born in Berlin, Germany. His mother was Silesian-born film star Helga Molander, and his father, Eduard Anton Eysenck, was an actor and nightclub entertainer who was once voted "handsomest man on the Baltic coast". His mother was Lutheran and his father was Catholic. Eysenck was brought up by his maternal grandmother who was a Jewish convert to Catholicism. Subjected to the Nuremberg laws, she was deported and died in a concentration camp.[11]: 8–11 [12]: 80  An initial move to England in the 1930s became permanent because of his opposition to the Nazi party and its persecutions. "My hatred of Hitler and the Nazis, and all they stood for, was so overwhelming that no argument could counter it."[11]: 40  Because of his German citizenship, he was initially unable to gain employment, and he came close to being interned during the war.[13] He received his PhD in 1940 from University College London (UCL) working in the Department of Psychology under the supervision of Professor Sir Cyril Burt, with whom he had a tumultuous professional relationship throughout his working life.[11]: 118–119 

Eysenck was Professor of Psychology at the Institute of Psychiatry, King's College London, from 1955 to 1983. He was a major contributor to the modern scientific theory of personality and helped find treatment for mental illnesses.[14][15] Eysenck also created and developed a distinctive dimensional model of personality structure based on empirical factor-analytic research, attempting to anchor these factors in biogenetic variation.[16] In 1981, Eysenck became a founding member of the World Cultural Council.[17] He was the founding editor of the international journal Personality and Individual Differences, and wrote about 80 books and more than 1,600 journal articles.[18] With his first wife, Hans Eysenck had a son Michael Eysenck, who is also a psychology professor. He had four children with his second wife, Sybil Eysenck: Gary, Connie, Kevin, and Darrin. Hans and Sybil Eysenck collaborated as psychologists for many years at the Institute of Psychiatry, University of London, as co-authors and researchers. Sybil Eysenck died in December 2020, and Hans Eysenck died of a brain tumour[19] in a London hospice in 1997.[20] He was an atheist.[21]

The Eysencks' home was at 10 Dorchester Drive, Herne Hill, London from 1960 until their respective deaths.[22]

Views and their reception

Examples of publications in which Eysenck's views roused controversy include (chronologically):

Eysenck's attitude was summarised in his autobiography Rebel with a Cause:[11] "I always felt that a scientist owes the world only one thing, and that is the truth as he sees it. If the truth contradicts deeply held beliefs, that is too bad. Tact and diplomacy are fine in international relations, in politics, perhaps even in business; in science only one thing matters, and that is the facts." He was one of the signers of the Humanist Manifesto.[24]

The Psychology of Politics

In this book, Eysenck suggests that political behavior may be analysed in terms of two independent dimensions: the traditional left-right distinction, and how 'tenderminded' or 'toughminded' a person is. Eysenck suggests that the latter is a result of a person's introversion or extraversion respectively.

Colleagues critiqued the research that formed the basis of this book, on a number of grounds, including the following:

Genetics, race and intelligence

Eysenck advocated a strong influence from genetics and race on IQ differences. Eysenck supported Arthur Jensen's questioning of whether variation in IQ between racial groups was entirely environmental.[26][27] In opposition to this position, Eysenck was punched in the face by a protester during a talk at the London School of Economics.[28] Eysenck also received bomb threats and threats to kill his young children.[29]

Eysenck claimed that the media had given people the misleading impression that his views were outside the mainstream scientific consensus. Eysenck cited The IQ Controversy, the Media and Public Policy as showing that there was majority support for all of the main contentions he had put forward, and further claimed that there was no real debate about the matter among relevant scientists.[30][31]

Regarding this controversy, in 1988 S. A. Barnett described Eysenck as a "prolific popularizer" and he exemplified Eysenck's writings on this topic with two passages from his early 1970s books:[32]

All the evidence to date suggests the ... overwhelming importance of genetic factors in producing the great variety of intellectual differences which we observe in our culture, and much of the difference observed between certain racial groups.

— HJ Eysenck, Race, Intelligence and Education, 1971, London: Temple Smith, p. 130

the whole course of development of a child's intellectual capabilities is largely laid down genetically, and even extreme environmental changes ... have little power to alter this development. H. J. Eysenck The Inequality of Man, 1973, London: Temple Smith, pp. 111–12

Barnett quotes additional criticism of Race, Intelligence and Education from Sandra Scarr,[32] who wrote in 1976 that Eysenck's book was "generally inflammatory"[33] and that there "is something in this book to insult almost everyone except WASPs and Jews."[34] Scarr was equally critical of Eysenck's hypotheses, one of which was the supposition that slavery on plantations had selected African Americans as a less intelligent sub-sample of Africans.[35] Scarr also criticised another statement of Eysenck on the alleged significantly lower IQs of Italian, Spanish, Portuguese and Greek immigrants in the US relative to the populations in their country of origin. "Although Eysenck is careful to say that these are not established facts (because no IQ tests were given to the immigrants or nonimmigrants in question?"[35]) Scarr writes that the careful reader would conclude that "Eysenck admits that scientific evidence to date does not permit a clear choice of the genetic-differences interpretation of black inferiority on intelligence tests," whereas a "quick reading of the book, however, is sure to leave the reader believing that scientific evidence today strongly supports the conclusion that US blacks are genetically inferior to whites in IQ."[35]

Some of Eysenck's later work was funded by the Pioneer Fund, an organization which promoted scientific racism.[36][37]

Cancer-prone personality

Eysenck also received funding for consultation research via the New York legal firm Jacob & Medinger, which was acting on behalf of the tobacco industry. In a talk[38] given in 1994 he mentioned that he asked Reynolds for funding to continue research. Asked what he felt about tobacco industry lawyers being involved in selecting scientists for research projects, he said that research should be judged on its quality, not on who paid for it, adding that he had not personally profited from the funds.[39] According to the UK newspaper The Independent, Eysenck received more than £800k in this way.[40] Eysenck conducted many studies making claims about the role of personality in cigarette smoking and disease,[41][42][43] but he also said "I have no doubt, smoking is not a healthy habit."[44]

His article "Cancer, personality and stress: Prediction and prevention"[45] very clearly defines Cancer-prone (Type C) personality. The science behind this claim has now come under public scrutiny in the 2019 King's College London enquiry (see below).

Genetics of personality

Further information: Biological basis of personality

In 1951, Eysenck's first empirical study into the genetics of personality was published. It was an investigation carried out with his student and associate Donald Prell, from 1948 to 1951, in which identical (monozygotic) and fraternal (dizygotic) twins, ages 11 and 12, were tested for neuroticism. It is described in detail in an article published in the Journal of Mental Science. Eysenck and Prell concluded: "The factor of neuroticism is not a statistical artifact, but constitutes a biological unit which is inherited as a whole....neurotic predisposition is to a large extent hereditarily determined."[46]

Model of personality

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 by the first letters, E and N.

E and N provided a two-dimensional space to describe individual differences in behaviour. Eysenck noted how these two dimensions were similar to the four personality types first proposed by the Greek physician Galen.

The third dimension, psychoticism, was added to the model in the late 1970s, based upon collaborations between Eysenck and his wife, Sybil B. G. Eysenck.[47]

Eysenck's model attempted to provide detailed theory of the causes of personality.[48] For example, Eysenck proposed that extraversion was caused by variability in cortical arousal: "introverts are characterized by higher levels of activity than extraverts and so are chronically more cortically aroused than extraverts".[49] Similarly, Eysenck proposed that location within the neuroticism dimension was determined by individual differences in the limbic system.[50] While it seems counterintuitive to suppose that introverts are more aroused than extraverts, the putative effect this has on behaviour is such that the introvert seeks lower levels of stimulation. Conversely, the extravert seeks to heighten his or her arousal to a more favourable level (as predicted by the Yerkes-Dodson Law) by increased activity, social engagement and other stimulation-seeking behaviours.

Comparison with other theories

Jeffrey Alan Gray, a former student of Eysenck's, developed a comprehensive alternative theoretical interpretation (called Gray's biopsychological theory of personality) of the biological and psychological data studied by Eysenck – leaning more heavily on animal and learning models. Currently, the most widely used model of personality is the Big Five model.[51][52] The purported traits in the Big Five model are as follows:

  1. Conscientiousness
  2. Agreeableness
  3. Neuroticism
  4. Openness to experience
  5. Extraversion

Extraversion and neuroticism in the Big Five are very similar to Eysenck's traits of the same name. However, what he calls the trait of psychoticism corresponds to two traits in the Big Five model: conscientiousness and agreeableness (Goldberg & Rosalack 1994). Eysenck's personality system did not address openness to experience. He argued that his approach was a better description of personality.[53]

Psychometric scales

Eysenck's theory of personality is closely linked with the psychometric scales that he and his co-workers constructed.[54] These included the Maudsley Personality Inventory (MPI), the Eysenck Personality Inventory (EPI), the Eysenck Personality Questionnaire (EPQ),[55] as well as the revised version (EPQ-R) and its corresponding short-form (EPQ-R-S). The Eysenck Personality Profiler (EPP) breaks down different facets of each trait considered in the model.[56] There has been some debate about whether these facets should include impulsivity as a facet of extraversion as Eysenck declared in his early work, or of psychoticism, as he declared in his later work.[54]

Publication in far right-wing press

Eysenck was accused of being a supporter of political causes on the extreme right. Connecting arguments were that Eysenck had articles published in the German newspaper National-Zeitung,[57] which called him a contributor, and in Nation und Europa, and that he wrote the preface to a book by a far-right French writer named Pierre Krebs, Das unvergängliche Erbe, that was published by Krebs' Thule Seminar. Linguist Siegfried Jäger [de] interpreted the preface to Krebs' book as having "railed against the equality of people, presenting it as an untenable ideological doctrine." In the National Zeitung Eysenck reproached Sigmund Freud for alleged trickiness and lack of frankness.[58][59] Other incidents that fuelled Eysenck's critics like Michael Billig and Steven Rose include the appearance of Eysenck's books on the UK National Front's list of recommended readings and an interview with Eysenck published by National Front's Beacon (1977) and later republished in the US neo-fascist Steppingstones; a similar interview had been published a year before by Neue Anthropologie, described by Eysenck's biographer Roderick Buchanan as a "sister publication to Mankind Quarterly, having similar contributors and sometimes sharing the same articles."[60] Eysenck also wrote an introduction for Roger Pearson's Race, Intelligence and Bias in Academe.[61] In this introduction to Pearson's book, Eysenck retorts that his critics are "the scattered troops" of the New Left, who have adopted the "psychology of the fascists".[62] Eysenck's book The Inequality of Man, translated in French as L'Inegalite de l'homme, was published by GRECE's publishing house, Éditions Corpernic.[63] In 1974, Eysenck became a member of the academic advisory council of Mankind Quarterly, joining those associated with the journal in attempting to reinvent it as a more mainstream academic vehicle.[64][65] Billig asserts that in the same year Eysenck also became a member of the comité de patronage of GRECE's Nouvelle École.[66]

Remarking on Eysenck's alleged right-wing connections, Buchanan writes: "For those looking to thoroughly demonize Eysenck, his links with far right groups revealed his true political sympathies." According to Buchanan, these harsh critics interpreted Eysenck's writings as "overtly racist". Furthermore, Buchanan writes that Eysenck's fiercest critics were convinced that Eysenck was "willfully misrepresenting a dark political agenda". Buchanan argued that "There appeared to be no hidden agenda to Hans Eysenck. He was too self-absorbed, too preoccupied with his own aspirations as a great scientist to harbor specific political aims."[64]

As Buchanan commented:

Harder to brush off was the impression that Eysenck was insensitive, even willfully blind to the way his work played out in a wider political context. He did not want to believe, almost to the point of utter refusal, that his work gave succor to right-wing racialist groups. But there is little doubt that Jensen and Eysenck helped revive the confidence of these groups. [...] It was unexpected vindication from a respectable scientific quarter. The cautionary language of Eysenck's interpretation of the evidence made little difference. To the racialist right, a genetic basis for group differences in intelligence bore out racialist claims of inherent, immutable hierarchy.[64]

According to Buchanan, Eysenck believed that the quality of his research would "help temper social wrongs and excesses".[64] Eysenck's defence was that he did not shy away from publishing or being interviewed in controversial publications, and that he did not necessarily share their editorial viewpoint. As examples, Buchanan mentions contributions by Eysenck to pornographic magazines Mayfair and Penthouse.[64]

Eysenck described his views in the introduction to Race, Education and Intelligence:

My recognition of the importance of the racial problem, and my own attitudes of opposition to any kind of racial segregation, and hatred for those who suppress any sector of the community on grounds of race (or sex or religion) were determined in part by the fact that I grew up in Germany, at a time when Hitlerism was becoming the very widely held doctrine which finally prevailed and led to the deaths of several million Jews whose only crime was that they belonged to an imaginary "race" which had been dreamed up by a group of men in whom insanity was mixed in equal parts with craftiness, paranoia with guile, and villainy with sadism.[67]

Parapsychology and astrology

Eysenck believed that empirical evidence supported parapsychology and astrology.[68][69] He was criticised by scientific skeptics for endorsing fringe science. Henry Gordon for example stated that Eysenck's viewpoint was "incredibly naive" because many of the parapsychology experiments he cited as evidence contained serious problems and were never replicated.[70] Magician and skeptic James Randi noted that Eysenck had supported fraudulent psychics as genuine and had not mentioned their sleight of hand. According to Randi, he had given "a totally-one sided view of the subject".[71] In 1983, Eysenck and Carl Sargent published their book Know Your Own Psi-IQ, which was designed to test readers' extrasensory perception abilities.[72] According to Randi, "the authors instead gave users a highly biased procedure that would make experiments meaningless and certainly discourage further investigation by the amateur."[72]

Later work

In 1994, he was one of 52 signatories on "Mainstream Science on Intelligence",[73] an editorial written by Linda Gottfredson and published in The Wall Street Journal, which described the consensus of the signing scholars on issues related to intelligence research following the publication of the book The Bell Curve.[74] Eysenck included the entire editorial in his 1998 book Intelligence: A New Look.[75]

Posthumous reevaluation

Eysenck's work has undergone reevaluation since his death.

Psychologist Donald R. Peterson noted in letters written in 1995 and published in 2005 that years earlier he had stopped trusting Eysenck's work after he tried to replicate a study done in Eysenck's lab and concluded that the results of the original study must have been "either concocted or cooked".[76]

2019 King's College London enquiry

In 2019 the psychiatrist Anthony Pelosi, writing for the Journal of Health Psychology, described Eysenck's work as unsafe.[77][78] Pelosi described some of Eysenck's work as leading to "one of the worst scientific scandals of all time",[7] with "what must be the most astonishing series of findings ever published in the peer-reviewed scientific literature"[7] and "effect sizes that have never otherwise been encountered in biomedical research."[7] Pelosi cited 23 "serious criticisms" of Eysenck's work that had been published independently by multiple authors between 1991 and 1997, noting that these had never been investigated "by any appropriate authority" at that time.[77] The reportedly fraudulent papers covered the links between personality and cancer. Grossarth and Eysenck claimed the existence of a "cancer prone personality" were supposed to have a risk of dying of cancer 121 times greater than controls, when exposed to the carcinogen physical factor tobacco smoking. Bosely (2019): The "heart disease-prone personality" exposed to physical risk factors is asserted to have 27 times the risk of dying of heart disease as controls.[7] Pelosi concluded "I honestly believe, having read it so carefully and tried to find alternative interpretations, that this is fraudulent work."[7]

Pelosi's writing prompted additional analysis from other academics and journalists. Citing Pelosi, psychologist David F. Marks wrote an open letter (also published in the Journal of Health Psychology) calling for the retraction or correction of 61 additional papers by Eysenck.[79][80] In 2019, 26 of Eysenck's papers (all coauthored with Ronald Grossarth-Maticek) were "considered unsafe" by an enquiry on behalf of King's College London.[6][7][78] It concluded that these publications describing experimental or observational studies were unsafe. It decided that the editors of the 11 journals in which these studies appeared should be informed of their decision.[6][7] All of the 26 papers were cited in Marks' open letter.[79]

Diagram of the Eysenck and Grossarth-Maticek perspective on personality and cancer as characterized by critics,[6][7][77] a characterization disputed by Grossarth-Maticek.[81]

The publications under discussion were criticized, among other things, for the reason that Eysenck's research work was partly financed by the tobacco industry and he therefore may have had an interest to show an association between personality and cancer (instead of an association of smoking and cancer).[citation needed] Eysenck said in 1990, "Note that I have never stated that cigarette smoking is not causally related to cancer and coronary heart disease; to deny such a relationship would be irresponsible and counter to the evidence. I have merely stated that the available evidence is insufficient to prove a causal relationship, and this I believe to be true." In his statement at the time, Eysenck failed to take into account the highly addictive effect of nicotine, which was only later clearly proven by neurophysiological studies.[82][non-primary source needed]

Grossarth emphasized that the development of disease is often multicausal, whereby the factors reinforce each other in their effect, and he explicitly speaks of behavioral characteristics that may change due to psychological intervention. Grossarth emphasises their changeability through cognitive behavioral therapy in his intervention studies. Noting that Eysenck died many years ago and cannot defend himself, Grossarth-Maticek wrote a rebuttal and announced legal actions.[81]

Following the King's College London enquiry the International Journal of Sport Psychology retracted a paper that was coauthored by Eysenck in 1990.[83] Later, 13 additional papers were retracted.[84] As of the end of 2020, there had been fourteen retractions and seventy-one expressions of concern on papers from as far back as 1946.[85] Some of these are early papers having nothing to do with health and the King's College enquiry "did not specifically name the articles this expression of concern relates to as problematic".[86]


There are five portraits of Eysenck in the permanent collection of the National Portrait Gallery, London, including photographs by Anne-Katrin Purkiss and Elliott and Fry.[87]




Edited books


See also


  1. ^ "Hans Eysenck Official Site". Hans Eysenck. Retrieved 30 January 2020.
  2. ^ Boyle, G.J., & Ortet, G. (1997). Hans Jürgen Eysenck: Obituario. Ansiedad y Estrés (Anxiety and Stress), 3, i-ii.
  3. ^ Boyle, G.J. (2000). Obituaries: Raymond B. Cattell and Hans J. Eysenck. Multivariate Experimental Clinical Research, 12, i-vi.
  4. ^ Haggbloom, S. J. (2002). "The 100 most eminent psychologists of the 20th century". Review of General Psychology. 6 (2): 139–152. doi:10.1037/1089-2680.6.2.139. S2CID 145668721.
  5. ^ a b c d O'Grady, Cathleen (15 July 2020). "Misconduct allegations push psychology hero off his pedestal". Science | AAAS. Retrieved 24 July 2020.
  6. ^ a b c d "King's College London enquiry into publications authored by Professor Hans Eysenck with Professor Ronald Grossarth-Maticek" (PDF). October 2019.
  7. ^ a b c d e f g h i Boseley, Sarah (11 October 2019). "Work of renowned UK psychologist Hans Eysenck ruled 'unsafe'". The Guardian.
  8. ^ Marks, David F; Buchanan, Roderick D (January 2020). "King's College London's enquiry into Hans J Eysenck's 'Unsafe' publications must be properly completed". Journal of Health Psychology. 25 (1): 3–6. doi:10.1177/1359105319887791. PMID 31841048.
  9. ^ a b Rose, Steven (7 August 2010). "Hans Eysenck's controversial career". The Lancet. 376 (9739): 407–408. doi:10.1016/S0140-6736(10)61207-X. ISSN 0140-6736. S2CID 54303305. Retrieved 24 March 2022.
  10. ^ a b Colman, Andrew M. (December 2016). "Race differences in IQ: Hans Eysenck's contribution to the debate in the light of subsequent research". Personality and Individual Differences. 103: 182–189. doi:10.1016/j.paid.2016.04.050. hdl:2381/37768. To many people, Hans Eysenck's name is principally associated with certain claims that he first published in 1971 about the heritability of intelligence and race differences in IQ scores.
  11. ^ a b c d Eysenck, H. J., Rebel with a Cause (an Autobiography), London: W. H. Allen & Co., 1990
  12. ^ Buchanan, R. D. (2010). Playing With Fire: The Controversial Career of Hans J. Eysenck. Oxford University Press. pp. 25–30. ISBN 978-0-19-856688-5.
  13. ^ "Hans Jürgen Eysenck Facts, information, pictures | Encyclopedia.com articles about Hans Jürgen Eysenck". Encyclopedia.com. Retrieved 22 July 2011.
  14. ^ Behaviour Therapy and the Neurosis, edited by Hans Eysenck, London: Pergamon Press, 1960.
  15. ^ Eysenck, Hans J., Experiments in Behaviour Therapy, London: Pergamon Press, 1964.
  16. ^ "Buchanan, R. D. "Looking back: The controversial Hans Eysenck", The Psychologist, 24, Part 4, April 2011". Archived from the original on 26 August 2014. Retrieved 18 April 2012.
  17. ^ "About Us". World Cultural Council. Retrieved 8 November 2016.
  18. ^ Honan, William H. (10 September 1997). "Hans J. Eysenck, 81, a Heretic in the Field of Psychotherapy". The New York Times. Retrieved 4 May 2010.
  19. ^ "APA Presidents Remember: Hans Eysenck — Visionary Psychologist". Archived from the original on 7 October 2008. Retrieved 13 November 2008.
  20. ^ "Hans J. Eysenck". Archived from the original on 6 November 2008. Retrieved 13 November 2008.
  21. ^ Martin, Michael (2007). The Cambridge Companion to Atheism. Cambridge University Press. p. 310. ISBN 9780521842709. Among celebrity atheists with much biographical data, we find leading psychologists and psychoanalysts. We could provide a long list, including...Hans Jürgen Eysenck...
  22. ^ Marsh, Laurence (Winter 2021). "When is a house unique?". Herne Hill (152). Herne Hill Society.
  23. ^ "Classics in the History of Psychology – Eysenck (1957)". Psychclassics.yorku.ca. 23 January 1952. Retrieved 22 July 2011.
  24. ^ "Humanist Manifesto II". American Humanist Association. Retrieved 3 October 2012.
  25. ^ Altemeyer, Bob. Right Wing Authoritarianism (Manitoba: University of Manitoba Press, 1981) 80–91, ISBN 0-88755-124-6.
  26. ^ Eysenck, H. (1971). Race, Intelligence and Education. London: Maurice Temple Smith.
  27. ^ Boyle, Gregory J.; Stankov, Lazar; Martin, Nicholas G.; Petrides, K.V.; Eysenck, Michael W.; Ortet, Generos (December 2016). "Hans J. Eysenck and Raymond B. Cattell on intelligence and personality" (PDF). Personality and Individual Differences. 103: 40–47. doi:10.1016/j.paid.2016.04.029. S2CID 151437650.
  28. ^ Roger Pearson, Race, Intelligence and Bias in Academe, 2nd edition, Scott-Townsend (1997), ISBN 1-878465-23-6, pp. 34–38.
  29. ^ Staff Reporter (12 September 1997). "Scientist or showman?". Mail & Guardian. Africa. Retrieved 23 June 2022.
  30. ^ Eysenck, Hans J., Rebel with a Cause (an Autobiography), London: W. H. Allen & Co., 1990, pp. 289–291.
  31. ^ BBC television series Face To Face • Hans Eysenck – broadcast 16 October 1990.
  32. ^ a b Barnett, S. A. (1988). Biology and Freedom: An Essay on the Implications of Human Ethology. Cambridge University Press. pp. 160–161. ISBN 978-0-521-35316-8.
  33. ^ Sandra Scarr (1976). "Unknowns in the IQ equation". In Ned Joel Block and Gerald Dworkin (ed.). The I.Q. Controversy: Critical Readings. Pantheon Books. p. 114. ISBN 978-0-394-73087-5.
  34. ^ Sandra Scarr (1976). "Unknowns in the IQ equation". In Ned Joel Block and Gerald Dworkin (ed.). The I.Q. Controversy: Critical Readings. Pantheon Books. p. 116. ISBN 978-0-394-73087-5.
  35. ^ a b c Scarr, Sandra (1981). Race, Social Class, and Individual Differences in IQ. Psychology Press. pp. 62–65. ISBN 978-0-89859-055-5.
  36. ^ William H. Tucker, The Funding of Scientific Racism: Wickliffe Draper and the Pioneer Fund. University of Illinois Press, 2002.
  37. ^ "Grantees". Pioneerfund.org. Archived from the original on 27 July 2011. Retrieved 22 July 2011.
  38. ^ Archived at Ghostarchive and the Wayback Machine: Hans Eysenck (1994) personality and cancer lecture, 13 September 2015, retrieved 30 January 2020
  39. ^ Example document here "Memorandum Regarding Professor Eysenck's Research Progress". Archived 12 January 2012 at the Wayback Machine
  40. ^ Peter pringle, "Eysenck took pounds 800,000 tobacco funds", The Independent, 31 October 1996.
  41. ^ Eysenck, H. J.; Tarrant, Mollie; Woolf, Myra; England, L. (14 May 1960). "Smoking and Personality". British Medical Journal. 1 (5184): 1456–1460. doi:10.1136/bmj.1.5184.1456. PMC 1967328. PMID 13821141.
  42. ^ Eysenck, H.J. (July 1964). "Personality and cigarette smoking". Life Sciences. 3 (7): 777–792. doi:10.1016/0024-3205(64)90033-5. PMID 14203979.
  43. ^ Eysenck, H.J. (1988). "The respective importance of personality, cigarette smoking and interaction effects for the genesis of cancer and coronary heart disease". Personality and Individual Differences. 9 (2): 453–464. doi:10.1016/0191-8869(88)90123-7.
  44. ^ Buchanan, Roderick D. (2010). Playing with Fire: The Controversial Career of Hans J. Eysenck. OUP Oxford. p. 376. ISBN 978-0-19-856688-5.
  45. ^ Eysenck, H.J. (January 1994). "Cancer, personality and stress: Prediction and prevention". Advances in Behaviour Research and Therapy. 16 (3): 167–215. doi:10.1016/0146-6402(94)00001-8.
  46. ^ The Journal of Mental Health, July 1951, Vol. XCVII, "The Inheritance of Neuroticism: An Experimental Study", H. J. Eysenck and D. B. Prell, p. 402.
  47. ^ H. J. Eysenck and S. B. G. Eysenck (1976). Psychoticism as a Dimension of Personality. London: Hodder & Stoughton.
  48. ^ Eysenck, H. J. (1967). The Biological Basis of Personality. Springfield, IL: Thomas.
  49. ^ (Eysenck & Eysenck, 1985)
  50. ^ Thomas, Kerry. (2007). The individual differences approach to personality. In Mapping Psychology (p. 315). The Open University.
  51. ^ Boyle, G. J. (2008). Critique of Five-Factor Model (FFM). In G. J. Boyle et al. (Eds.), The SAGE Handbook of Personality Theory and Assessment: Vol. 1 - Personality Theories and Models. Los Angeles, CA: Sage Publishers. ISBN 978-1-4129-4651-3 ISBN 1-4129-2365-4
  52. ^ Grohol, John M. (30 May 2019). "The Big Five Personality Traits". psychcentral.com. Retrieved 22 August 2020.
  53. ^ Eysenck, H.J. (June 1992). "Four ways five factors are not basic". Personality and Individual Differences. 13 (6): 667–673. doi:10.1016/0191-8869(92)90237-J.
  54. ^ a b Furnham, A., Eysenck, S. B. G., & Saklofske, D. H. (2008). The Eysenck personality measures: Fifty years of scale development. In G.J. Boyle, G. Matthews, & D.H. Saklofske. (Eds.), The SAGE Handbook of Personality Theory and Assessment: Vol. 2 – Personality Measurement and Testing (pp. 199-218). Los Angeles, CA: Sage Publishers.
  55. ^ Eysenck, H. J., & Eysenck, S. B. G. (1975). Manual of the Eysenck Personality Qyestionnaire (Junior and Adult). London: Hodder & Stoughton.
  56. ^ Eysenck, H. J., & Wilson, G. D. (1991). The Eysenck Personality Profiler. London: Corporate Assessment Network.
  57. ^ Christina Schori-Liang. Europe for the Europeans: The Foreign and Security Policy of the Populist Radical Right. Ashgate 2007. p.160.
  58. ^ Siegfried Jäger. "Der Singer-Diskurs sowie einige Bemerkungen zu seiner Funktion für die Stärkung rassistischer und rechtsextremer Diskurse in der Bundesrepublik Deutschland". First appeared in Siegfried Jäger and Jobst Paul [de] (1991). Von Menschen und Schweinen. Der Singer-Diskurs und seine Funktion für den Neo-Rassismus. Duisburg: Diss-Texte Nr. 13. p. 7-30. ISBN 3885151219. Quotation: "Eysenck stellt sich zudem rückhaltlos hinter rechtsextreme Theorie-Zirkel wie z.B. das Kasseler Thule-Seminar. Zu dem von dessen Leiter herausgegebenen Buch mit dem Titel "Das unvergängliche Erbe" verfaßte er das Vorwort, in dem er gegen die Gleichheit der Menschen wettert, indem er sie als "unhaltbare ideologische Doktrin" abtut. (in Krebs 1981, S. 12)"
  59. ^ Roderick D. Buchanan (2010). Playing With Fire: The Controversial Career of Hans J. Eysenck. Oxford University Press. pp. 324–326. ISBN 978-0-19-856688-5.
  60. ^ Roderick D. Buchanan (2010). Playing With Fire: The Controversial Career of Hans J. Eysenck. Oxford University Press. pp. 320–321. ISBN 978-0-19-856688-5.
  61. ^ Roderick D. Buchanan (2010). Playing With Fire: The Controversial Career of Hans J. Eysenck. Oxford University Press. p. 323. ISBN 978-0-19-856688-5.
  62. ^ Stefan Kuhl (1994). The Nazi Connection:Eugenics, American Racism, and German National Socialism. Oxford University Press. p. 5. ISBN 978-0-19-988210-6.
  63. ^ J.G. Shields (2007). The Extreme Right in France. Taylor & Francis. pp. 150, 145. ISBN 978-0-415-09755-0.
  64. ^ a b c d e Roderick D. Buchanan (2010). Playing With Fire: The Controversial Career of Hans J. Eysenck. Oxford University Press. p. 323. ISBN 978-0-19-856688-5.
  65. ^ Leonie Knebel and Pit Marquardt (2012). "Vom Versuch, die Ungleichwertigkeit von Menschen zu beweisen". In Michael Haller and Martin Niggeschmidt (ed.). Der Mythos vom Niedergang der Intelligenz: Von Galton zu Sarrazin: Die Denkmuster und Denkfehler der Eugenik. Springer DE. p. 104. doi:10.1007/978-3-531-94341-1_6. ISBN 978-3-531-18447-0. referring to P. Krebs, ed. (1981). Das unvergängliche Erbe. Alternativen zum Prinzip der Gleichheit. Tübingen: Grabert Verlag. ISBN 978-3-87847-051-9.
  66. ^ Michael Billig, (1979) Psychology, Racism, and Fascism, on-line edition
  67. ^ Hans Eysenck (1973). Race, Education and Intelligence. Maurice Temple Smith. pp. 9–10. ISBN 978-0-8511-7009-1.
  68. ^ Eysenck, H. J. (1957), Sense and Nonsense in Psychology. London: Pelican Books. p. 131.
  69. ^ Eysenck & Sargent (2nd edition, 1993), Explaining the Unexplained. London: BCA, No ISBN. Preface & ff.
  70. ^ Gordon, Henry. (1988). Extrasensory Deception: ESP, Psychics, Shirley MacLaine, Ghosts, UFO. Prometheus Books. pp. 139-140. ISBN 0-87975-407-9
  71. ^ Nias, David K. B.; Dean, Geoffrey A. (2012). "Astrology and Parapsychology". In Modgil, Sohan; Modgil, Celia (eds.). Hans Eysenck: Consensus And Controversy. pp. 371–388. doi:10.4324/9780203299449-38. ISBN 978-0-203-29944-9.
  72. ^ a b Randi, James (1995). An encyclopedia of claims, frauds, and hoaxes of the occult and supernatural: decidedly sceptical definitions of alternative realities. New York, NY: St. Martin's Griffin. ISBN 978-0-312-15119-5.
  73. ^ Gottfredson, Linda (13 December 1994). Mainstream Science on Intelligence. Wall Street Journal, p. A18.
  74. ^ Gottfredson, Linda (1997). "Mainstream Science on Intelligence: An Editorial With 52 Signatories, History, and Bibliography". Intelligence. 24 (1): 13–23. doi:10.1016/S0160-2896(97)90011-8.
  75. ^ Eysenck, Hans (1998). Intelligence: A New Look. New Brunswick (NJ): Transaction Publishers. pp. 1–6. ISBN 978-1-56000-360-1.
  76. ^ Peterson, Donald R. (2005). Twelve Years of Correspondence with Paul Meehl: Tough Notes from a Gentle Genius. Mahwah, NJ: Lawrence Erlbaum Associates. pp. 23, 136. doi:10.4324/9781315084510. ISBN 9780805854893. OCLC 57754047.
  77. ^ a b c Pelosi, Anthony J. (2019). "Personality and fatal diseases: Revisiting a scientific scandal". Journal of Health Psychology. 24 (4): 421–439. doi:10.1177/1359105318822045. PMC 6712909. PMID 30791726.
  78. ^ a b Boseley, Sarah (11 October 2019). "Work of renowned UK psychologist Hans Eysenck ruled 'unsafe'". The Guardian – via www.theguardian.com.
  79. ^ a b Marks, David F (March 2019). "The Hans Eysenck affair: Time to correct the scientific record". Journal of Health Psychology. 24 (4): 409–420. doi:10.1177/1359105318820931. PMID 30791728.
  80. ^ "Is this 'one of the worst scientific scandals of all time'?". Cosmos Magazine. 21 October 2019. Retrieved 3 November 2019.
  81. ^ a b Grossarth-Maticek, Ronald. "Answers to Pelosi and Marks". Krebs Chancen. Retrieved 19 November 2019.
  82. ^ Aho v. Suomen; Tupakka Oy: Tobacco Documents Library Id: kqgf0028. Available at: Truth Tobacco Industry documents: Sworn statement of HANS JURGEN EYSENCK, Ph.D., Sc.D., December 10, 1990, page 10 – 11 and following.
  83. ^ Oransky, Ivan (21 January 2020). "Journal retracts 30-year-old paper by controversial psychologist Hans Eysenck". Retraction Watch. Retrieved 22 January 2020.
  84. ^ Oransky, Ivan (12 February 2020). "Journals retract 13 papers by Hans Eysenck, flag 61, some 60 years old". Retraction Watch. Retrieved 13 February 2020.
  85. ^ Marks, David F. (November–December 2020). "Hans J. Eysenck: The Downfall of a Charlatan". Skeptical Inquirer. Amherst, New York: Center for Inquiry. pp. 35–39. Retrieved 16 February 2021.
  86. ^ "EXPRESSION OF CONCERN: Articles by Hans J. Eysenck". Perceptual and Motor Skills. 124 (2): 922–924.
  87. ^ "National Portrait Gallery – Person – Hans Jürgen Eysenck". Npg.org.uk. 1 October 1950. Retrieved 22 July 2011.

Further reading