Colin G. DeYoung

TL;DR: Findings indicate the existence of 2 distinct (but correlated) aspects within each of the Big Five, representing an intermediate level of personality structure between facets and domains.

TL;DR: Results from structural magnetic resonance imaging of 116 healthy adults supported hypotheses about the association of each personality trait with the volume of different brain regions in a biologically based, explanatory model of the Big Five personality traits.

TL;DR: Comparison of two instruments supported the hypotheses that single-adjective rating instruments are likely to yield lower interrater agreement than phrase rating instruments and that lower interRater agreement is associated with weaker correlations among the Big Five and a less coherent higher-order factor structure.

TL;DR: In this article, a biologically predicated model of these two personality factors, relating them to serotonergic and dopaminergic function, and they label them Stability (Emotional Stability, Agreeableness, and Conscientiousness) and Plasticity (Extraversion and Openness).

TL;DR: In this paper, the Cybernetic Big Five Theory attempts to provide a comprehensive, synthetic, and mechanistic explanatory model for personality traits, reflecting variation in the parameters of evolved cybernetic mechanisms and characteristic adaptations, representing goals, interpretations, and strategies defined in relation to an individual's particular life circumstances.