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Individual differences |
Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |
The Eysenck Personality Inventory (EPI) measures the two original traits described in the personality theory of Hans Eysenck. These are extraversion and neuroticism. The test was published commercially by Hans and his wife Sybil Eysenck in 1963 as a revision of the Maudsley Personality Inventory. It was subsequently superceded by the Eysenck Personality Questionnaire which introduced the third dimension of Psychoticism