The 23BB5: a new Bipolar Big Five questionnaire

In this paper we present a new questionnaire for the measurement of the Big Five personality dimensions. Principal-component analysis of the scores of a group of 450 normal subjects yielded an interpretable five-factor solution in which each factor is defined by a Big Five factor. Except for the Openness factor, the internal consistency of the factors was reasonable to good. Twenty-three of the 26 bipolar Big Five adjective pairs had criterion level (≥ 0.40) factor loadings on the expected factors. Based on this factor solution a 23 Bipolar Big Five questionnaire (23BB5) was constructed, in which each Big Five dimension consists of four to six bipolar items.