10: Trait Theories of Personality
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- 10.6: Hans Eysenck's Dimensions of Personality
- Hans Eysenck offered a theory of personality that was much more concise than that of Cattell, suggesting that there were only three major factors. He also emphasized the importance a hereditary basis for personality and intelligence, and he applied his research to some important everyday life circumstances. Accordingly, he was a very popular and widely acknowledged researcher.
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- 10.7: Paul Costa and Robert McCrae and the Five-Factor Model of Personality
- Costa and McCrae followed in the footsteps of Eysenck, but they expanded slightly upon the number of second order factors. The result of their efforts became one the most widely respected perspectives on personality structure today: the Five-Factor Model of personality. Indeed, the Five-Factor Model has been so well researched, research that has supported and expanded the original conception.