Relation of the Big Five to Biodata and aspects of the self

Two studies examined McCrae and Costa’s system model of personality. Their model suggests the Big Five should have relatively strong associations with life history (measured in Study 1 by Biodata) and with Self-Concept (measured in Study 2 by various Self questionnaires). Study 1—210 participants (143 females) completed Bipolar Big Five Markers and a Biodata inventory. Factor Analyses confirmed the Big Five and revealed seven viable Biodata factors. Multiple regression revealed that most Biodata factors were predicted well by 2 or more Big Five traits. Study 2—199 participants (125 females) completed Bipolar Big Five Markers and an omnibus Self inventory consisting of six previously developed scales. Factor Analyses confirmed the Big Five and revealed eight viable Self factors. Multiple regression revealed that the Self factors were also predicted fairly well by two or more Big Five traits.Both studies found relatively strong associations between the Big Five and the Biodata and Self factors, which lends support to McCrae and Costa’s system model of personality. A consistent pattern of both a primary and secondary trait as joint predictors of Biodata and Self factors suggests that these areas are systematically influenced by multiple traits rather than only single traits.