Abstract

The purpose of this study was to develop and validate a short form of a multi-dimensional personality inventory(Bright and Dark Personality Inventory: BDPI). Items were selected from the original form in order to develop the BDPI short form, and the reliability and validity of the short form were examined. A clinical psychologist and psychometrician selected 33 of the 165 original items in light of the item content and parameters(severity and discrimination). Internal consistency and test-retest reliability were generally low. The reason for the low reliability was an insufficient number of items for each factor. The model fit of the short form was better than that of the original form and the short form showed the same factor structure as the original form. The convergent validity of the short form was similar to that of the original form and the profiles of the short form and original form were similar to each other. As a result, although the short form was reduced by 80% from the original form, it was confirmed that the short form generated precise measurement of the same personality traits as the original form does. In order to evaluate the sub-factors belonging to each of the five factors, the original form should be used, but it is thought that the short form will be widely utilized in studies using the five factors as the main variable or in clinical settings for rapid measurements of personality. Finally, in the discussion section, limitations are addressed and suggestions are presented for further research.