whole-trait-theory

Whole Trait Theory says a personality trait is not a fixed inner essence but a density distribution of states — the average of what a person actually does, moment to moment, across situations.

Fleeson and Gallagher built it to reconcile two findings that seemed to contradict each other: traits are stable (people who are outgoing today are outgoing next year) yet states are variable (the same person is sometimes outgoing, sometimes quiet). The resolution: the trait is the distribution's center, the states are the distribution's spread, and both can be stable — the center holds while the spread breathes.

The theory gives the castle's openness wing its descriptive spine: the action facet of openness is the most visible part of the distribution (you can see someone do something new) but also the most voluntary (it tracks opportunity, not disposition) — so the trait's center and its spread measure different things. It is also the engine behind appraisal-engine's question: if a trait is a distribution of states, what generates the states — goals, appraisals, habits — and can an intervention move the generator rather than the distribution?