Eysenck Personality Questionnaire and Jungian Myers-Briggs type indicator correlation of extraversion-introversion.

Abstract

C. G. Jung (1971) and H. J. Eyscnck (1973) developed their concepts of extraversion- introversion from radically different theoretical orientations. The extraversion—introversion correlation of the Myers-Briggs Type Indicator (MBTT; Myers, 1962) with the Eyscnck Personality Questionnaire (EPQ; Eysenck & Eyscnck, 1968; Kysenck, Eysenck, & Shaw, 1974) is investigated here. The MBTI is a self-report forcedchoice inventory derived from Jungian type theory, it has four scales that can be scored in a continuous bipolar manner (Extra versionIntroversion; Thinking-Feeling; Sensation-Intuition; and Judgment-Perception). The unpublished EPQ, which is based on the Eysenck Personality Inventory, is a true-false self-report inventory with four scales (Extraversion; Neuroticism; Psychoticism; and Lie) derived from factor-analytic studies. Eysenck (J973) has been critical of the Jungian typology and the subjectivity of Jung's formulation. It is hypothesized here, however, that given the methods and content similarity of the EPQ and the MBTI, the Extra versionIntroversion scales of the inventories will be significantly positively correlated. Subjects were 93 paid volunteer undergraduates (54 females, 39 males), 18-22 years old, with a mean age of 19.7 years. The EPQ was given first, followed by the MBTI (Form F). Subjects were retested 1 week later with the same instruments given in the same order. On both inventories scale means and standard deviations for males and females were not significantly different from those of normative groups. Since the male and female correlation matrices showed no significant differences, the correlations in Table 1 arc based on both sexes combined. This table presents 1 week test-retest reliabilities and the correlations from the first administration of the EPQ and MBTI scales. Reliabilities are consonant with those previously reported for both tests. The MBTI Extra