HEXACO vs Big Five: What's the Difference?

HEXACO is the Big Five plus one crucial extra trait. Here's what that sixth dimension adds, and why some researchers prefer it.

If you know the Big Five, understanding HEXACO vs Big Five takes about a minute: HEXACO keeps the familiar traits and adds one important sixth dimension.

The shared five

Both models measure versions of Openness, Conscientiousness, Extraversion, Agreeableness and Emotionality/Neuroticism. On these, the two frameworks broadly agree.

The crucial extra: Honesty-Humility

HEXACO's contribution is the H factor, Honesty-Humility. It captures sincerity, fairness, modesty and a lack of greed or manipulation. The Big Five scatters these qualities awkwardly across Agreeableness; HEXACO gives them their own dimension.

Why it matters

That sixth factor turns out to predict things the Big Five misses, like who cuts ethical corners, exploits others, or behaves fairly when no one's watching. For questions about integrity and trust, HEXACO often has an edge.

Which should you take?

If you want the research-standard baseline, start with the Big Five. If you're curious about the integrity dimension the Big Five underweights, take HEXACO, it's the same idea, plus honesty-humility.