Abstract
The purpose of this study was to construct Jung's Psychological Types Scale (JPTS), and to examine its reliability and validity. First, 87 pairs of items were written, and their content validity examined by two Jungian analysts, who judged 74 pairs of them to be appropriate. In Study 1 542 undergraduates, 245 men and 297 women, responded to the interim scale. Exploratory factor analysis found three factors: extraversion-introversion (E-I), thinking-feeling (T-F), and sensation-intuition (S-N). Results of additional factor analyses indicated that the three factors were almost orthogonal. Then, nine item pairs each for the subscales were selected for the JPTS. The scale had high alpha and test-retest reliability coefficients. In Study 2, concurrent validity of the scale was examined in terms of Myers-Briggs Type Indicator (MBTI) Form M. The correlations showed meaningful patterns for concurrent validity. In addition, the scale was evaluated in terms of NEO Five Factor Inventory (NEO-FFI), a five-factor model (FFM) scale. The result showed that the three factors of E-I, T-F, and S-N corresponded to Extraversion (positive), Agreeableness (negative), and Openness (negative) of NEO-FFI, respectively.
