What is Allport's trait theory?
American psychologist Gordon Allport defined a trait, in his 1937 book Personality: A Psychological Interpretation, as a neuropsychic structure that renders many stimuli functionally equivalent and initiates consistent forms of behavior. He's regarded as one of the early figures who put the study of personality traits on academic footing, and he organized traits into three tiers β cardinal, central, and secondary β based on how much influence each has on a person's behavior.
How is it viewed in personality psychology today?
Allport's trait theory is seen as a starting point that led to Raymond Cattell's factor-analytic research and, eventually, to the Big Five model used most widely today. That said, the cardinal/central/secondary tier structure itself is more of a conceptual framework Allport proposed than a statistically validated factor structure β modern research relies on models like the Big Five, which have been validated against large datasets.
Frequently Asked Questions
Does anyone actually have a cardinal trait?
Even Allport believed that people with a trait powerful enough to dominate their entire life, as a true cardinal trait would, are extremely rare. They tend to be illustrated through historical figures' nicknames (someone described as "Machiavellian," for instance) β most people are better described by a combination of a few central traits.
How does this relate to the Big Five?
The lexical research that Allport and Odbert conducted β combing dictionaries for thousands of personality-describing words β is considered an important foundation that later researchers' factor analyses built on, eventually developing into today's Big Five five-factor model.