Can the Big Five Explain Both Interindividual Differences and Intraindividual Changes in Personality Traits?
The Big Five personality traits were discovered through factor analyses of cross-sectional associations among personality items. Yet, cross-sectional factor structures are a weighted blend of between- and within-person factor structures. Thus, the Big Five might not represent the underlying factors on the within-person level or on the between-person level. The aim of the current study was to investigate whether the Big Five factor structure holds on the between- and within-person level of personality trait measures. I fit common and unique trait-state (CUTS) models (Hamaker, Schuurman, & Zijlmans, 2017) to 11 years of longitudinal data from a Dutch household panel study (N = 12,901; Mage at Time 1 = 41.71; 54.34% women). The results indicated that the Big Five factor structure held across both between- and within-person levels. The findings lend support to past research that did not distinguish between the two levels when measuring the Big Five. The results furthermore suggest that latent dimensions rather than a network of interconnected components underly the common variance of Big Five trait measures.