As part of an assessment centre 431 candidates completed three self-report measures: one of personality disorders (Hogan Development Survey, HDS; Hogan & Hogan, 1997), one of personality traits (NEO-PI, Costa & McCrae, 1992), and one of personality type (MBTI; Briggs & Myers, 1987). Correlational and regressional analysis tested various hypotheses about the overlap between the different dimensions and confirmed previous research using different instruments (Saulsman & Page, 2004). Results revealed highest correlation between the HDS and NEO, showing neuroticism correlating (as predicted) with excitable (borderline) and cautious (avoidant); introversion correlating with avoidant (cautious), schizoid (detached), and (negatively) with colourful (histrionic); openness correlating with schizotypal (imaginative) and conscientiousness with diligent (obsessive–compulsive). Many of the ‘overlaps’ were suggested by Widiger, Trull, Clarkin, Sanderson, and Costa (2002). The overlap and lack of overlap is considered at the psychometric and conceptual level. Copyright © 2005 John Wiley & Sons, Ltd.