Stability and factor structure of the Jackson Personality Inventory-Revised

The Jackson Personality Inventory-Revised comprises 15 bipolar scales and f ive cluster scores concerning an individual's interpersonal patterns of int eraction, cognitive styles, and Value orientation. Recent reviews of this r evised version raise questions about test-retest stability as well as the f actor structure on which cluster scores are based. 74 men and 33 women (29- 61 years of age, M=42.3) completed the inventory while participating in a c ontinuing education program. Of these 45 participated in a second session 1 3 wk. later. Test-retest correlations are significant, with 12 of the 15 sc ales having correlations greater than or equal to .75. Intercorrelations am ong all subscales indicate that the Jackson subscales for the most part rem ain distinct from each other ranging from .01 to .59. A Principal Component s Analysis with a varimax rotation yielded three factors that parallel the NEO big five, i.e., Openness, Neuroticism, and Extroversion and replicated previous factor structure found for both versions of the Jackson inventory. The fourth and fifth factors here were labeled Trustworthy and Organizatio n; however, the composition of these factors across several studies appears to be unstable, suggesting optimal certainty when interpreting the cluster s of subscales associated only with Openness, Neuroticism, and Extroversion . Further research may help clarify the instability associated ii with the other factors of this inventory.