What are the big six personality types?

The Big Six Personality Types: Beyond the Classic Five

For decades, psychologists have explored how we differ in personality, often boiling it down to a handful of core traits. While many are familiar with the "Big Five" model—Extraversion, Agreeableness, Conscientiousness, Openness, and Neuroticism—a growing body of research suggests there's a more nuanced picture. Studies across diverse languages and cultures point to a six-factor model that offers a richer understanding of human character.

Proposed by researchers Ashton and Lee in 2007, the HEXACO model expands the traditional framework by adding a crucial dimension: Honesty–Humility. This trait captures sincerity, fairness, and a lack of greed or narcissism—qualities not fully represented in the original five. The other five factors—Emotionality, Extraversion, Agreeableness, Conscientiousness, and Openness to Experience—are similar but subtly refined. For instance, Emotionality in HEXACO focuses more on attachment and sentimentality rather than just neurotic instability.

What makes the HEXACO model compelling is its cross-cultural validity. Lexical studies—analyzing personality-related words in multiple languages—repeatedly uncover these six distinct clusters, suggesting they may reflect a deeper, more universal structure of human personality. It's not just about how outgoing or organized someone is; it's also about how genuine, empathetic, and principled they tend to be.

In real-world terms, someone high in Honesty–Humility might be humble and resist manipulation, while a person low in it may seek personal gain at others' expense. This added layer helps explain behaviors that the traditional five traits sometimes miss. As psychology continues to evolve, the Big Six offers a more complete lens for understanding the complexity of who we are.