THE RELATION OF NEUROTICISM AND EXTRAVERSION TO INTELLIGENCE AND EDUCATIONAL ATTAINMENT

S ummary . Several recent investigators have reported studies of personality factors in educational attainment in terms of Eysenck's dimensional theory of personality. These findings have tended to show that attainment is associated with introversion and neuroticism. In the present paper seven predictions concerning the associations of neuroticism and introversion‐extraversion with persistence, size of vocabulary and intelligence were derived from Eysenck's theory and subjected to investigation. Five of the predictions were verified at a statistically significant level, namely: (1) there was a positive correlation between introversion and persistence and (2) between neuroticism and size of vocabulary; (3) there was a curvilinear relation between neuroticism and score on Raven's matrices, subjects in the middle range of neuroticism doing best; (4) and (5) there was no significant correlation between either neuroticism or introversion and intelligence.