Gordon Allport's trait theory offers a fundamental structure for understanding personality, categorizing traits into three levels:
- Cardinal Traits: Overarching traits that primarily define an individual's personality, often impacting most behaviors (e.g., Mother Teresa's altruism).
- Central Traits: General qualities that constitute the core components of personality (e.g., honesty, sociability).
- Secondary Traits: Traits that are more context-dependent and less consistent, such as specific preferences or attitudes (e.g., a specific musical taste).
Allport's theory highlighted the distinctiveness of individuals, suggesting personality emerges from a unique blend of these traits, varying in their salience and effect.