Attachment dimensions and the big five personality traits: Associations and comparative ability to predict relationship quality

Several studies have explored associations between measures of adult attachment style and the Big Five personality traits or factors, but the studies have not included current dimensional measures of attachment style (Brennan, Clark, & Shaver, 1998) or the most complete (NEO-PI-R; Costa & McCrae, 1992) and frequently used (BFI; John, Donahue, & Kentle, 1991) measures of the Big Five. Moreover, most studies after Shaver and Brennan’s (1992) have not compared attachment style and Big Five measures as predictors of relationship quality. Here, we summarize past research and report two studies comparing Brennan et al.’s two-dimensional measure of attachment style with the BFI and NEO-PI-R measures of the Big Five. There are consistent and theoretically meaningful associations between the attachment-style and personality trait measures, but attachment-style dimensions still predict relationship quality better than measures of the Big Five. Implications are discussed.