Hippocrates and Carl Jung
The Eysenck Personality Inventory. (1964), by H. J. Eysenck, S. B. G. Eysenck
I had the same question, but found no answer. Yet, apparently EPQ is a later expanded version of EPI. Another development is EPQ-R, which is the revised version of EPQ.
H.J. Eysenck was a psychologist known for his work in personality theory, intelligence, and behavior. He authored several influential books on topics such as temperaments, personality, and psychology, including "Dimensions of Personality" and "The Structure of Human Personality." Eysenck was also known for his research on the biological bases of personality and behavior.
Eysenck's theory was that genetic factors have a greater impact on subsequent behavior than childhood or life experiences do in general. Meaning that the experiences that we have in life, especifically in our childhood have little to do with the development of our personality.
There are several conflicting theories of personality and development. Some of the most famous were proposed by Sigmund Freud, Karl Jung and H.P. Eysenck. A further explanation of these complex theories can be found at the "Slideshare" website.
Eysenck is to do with psychology not maths and he developed the ideas of personality types of extroversion introversion and neuroticism think again...
Hans Eysenck's personality theories was based on three universal traits. The degree of introversion/extroversion, moodiness or even temperedness he called neuroticism/emotional stability and psychoticism.
The personality type of an unstable extrovert.
Michael Eysenck was born in 1944.
When applied to questionnaires, a short scale measurement refers to a questionnaire that is a condensed version of a longer questionnaire. The Eysenck Personality Questionnaire, for example ccnsists of 100 yes/no questions. The short scale version of the Eysenck Personality Questionnaire, however, has only 48 yes/no questions.
Hans Eysenck was born on March 4, 1916.
Hans Eysenck was born on March 4, 1916.