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Part V    Biological/Evolutionary Theories440
about thesame timethathemarried Margaret Davies, aCanadian withadegree inmath -
ematics. In1940, hewasawarded aPhDfromtheUniversity ofLondon, butbythistime
England andmost European nations wereatwar.
AsaGerman national, hewasconsidered anenemy alien andnotallowed 
toenter theRoyal AirForce (hisfirstchoice) oranyother branch ofthemilitary. 
Instead, withnotraining asapsychiatrist orasaclinical psychologist, hewent towork 
attheMillHillEmergency Hospital, treating patients whoweresuffering from avari-
etyofpsychological symptoms, including anxiety, depression, andhysteria. Eysenck, 
however, wasnotcomfortable withmost ofthetraditional clinical diagnostic catego -
ries.Using factor analysis, hefound thattwomajor personality factors— neuroticism/
emotional stability andextraversion/introversion—could account forallthetraditional 
diagnostic groups. These early theoretical ideas ledtothepublication ofhisfirstbook, 
Dimensions of Personality (Eysenck, 1947). 
After thewar,hebecame director ofthepsychology department atMaudsley 
Hospital andlaterbecame areader inpsychology attheUniversity ofLondon. In
1949, hetraveled toNorth America toexamine theclinical psychology programs 
intheUnited States andCanada withtheideaofsetting upaclinical psychol -
ogyprofession inGreat Britain. Heobtained avisiting professorship attheUni-
versity ofPennsylvania fortheyear1949–1950, buthespent much ofthatyear
traveling throughout theUnited States andCanada looking overclinical psychology 
programs, which hefound tobetotally inadequate andunscientific (Eysenck, 1980, 
1997b).
Eysenck andhiswifehadbeen growing steadily apart, andhismarriage was
notimproved when histraveling companion toPhiladelphia wasSybil Rostal, abeau -
tifulquantitative psychologist. Onreturning toEngland, Eysenck obtained adivorce 
from hisfirstwifeandmarried Sybil. Hans andSybil Eysenck coauthored several 
publications, andtheirmarriage produced three sonsandadaughter. Eysenck’s son
from hisfirstmarriage, Michael, isawidely published author ofpsychology articles 
andbooks. 
After returning from North America, Eysenck established aclinical psychology 
department attheUniversity ofLondon andin1955 became professor ofpsychol -
ogy.While intheUnited States, hehadbegun The Structure of Human Personality 
(1952b), inwhich heargued fortheefficacy offactor analysis asthebestmethod of
representing theknown factsofhuman personality.
Eysenck wasperhaps themost prolific writer inthehistory ofpsychology, hav-
ingpublished about 800journal articles orbook chapters andmore than75books, 
afeatmade allthemore remarkable bytheclaim bySybil (hissecond wife) thathe
wasverymuch afamily manandnever tookwork home withhim(Eysenck, 2016). 
Several havetitles withpopular appeal, suchasUses and Abuses of Psychology (1953); 
The Psychology of Politics (1954, 1999); Sense and Nonsense in Psychology (1956); 
Know Your Own IQ (1962); Fact and Fiction in Psychology (1965); Psychology Is About 
People (1972); You and Neurosis (1977b); Sex, Violence and the Media (with D.K.B.
Nias, 1978); Smoking, Personality, and Stress (1991d); Genius: The Natural History of 
Creativity (1995); andIntelligence: A New Look (1998a).
Eysenck’s range ofinterests wasexceedingly broad, andhiswillingness to
stepintoalmost anycontroversy waslegendary. Hewasagadfly totheconscience Final PDF to printer