Global Self-Rating Validation of the Measurement of Extraversion and Neuroticism

To contribute to the estimation of the validity of Eysenck's major personality dimensions of extraversion and neuroticism, as measured by the newly developed P-E-N inventory (Eysenck and Eysenck, 1972), 122 university students completed the P-E-N as well as global self-ratings of these dimensions. The correlations between the two techniques were 0.61 and 0.67 for extraversion and neuroticism, respectively. Individuals identified by the personality inventory as extravert or introvert also differed significantly in the expected direction on the global self-ratings. This result also obtained for neuroticism. The two dimensions themselves were significantly correlated in the personality inventory, contrary to Eysenck's theory, but not in the global self-ratings. The results, which were in accord with previous work supporting the self-rating validation of these dimensions, extend that work to the most recently developed measures of extraversion and neuroticism.