What the Enneagram Looks Like in the Data

The Big Five is perhaps the gold standard of personality psychology, the model researchers rely on most for describing the major traits that shape how a person thinks, acts, and relates. Those traits are...

Openness: curiosity, imagination, interest in new ideas and experiences

Conscientiousness: organization, discipline, reliability, follow-through

Extroversion: sociability, energy, assertiveness

Agreeableness: warmth, cooperation, consideration for others

Neuroticism: sensitivity to stress, threat, and negative emotion

What happens when you map these traits onto each of the nine Enneagram types? A surprising amount lines up exactly as you’d expect. But buried in the data are some unexpected combinations of traits within each type, as well as strange similarities between Enneagram types that seem completely different.

Here are 12 of our coolest findings:

1. Eights are the hardest type to rattle.

Eights score dramatically lower in neuroticism than every other type (-.68). That means lower sensitivity to stress, threat, and negative emotion. Their notorious toughness may be less about projecting confidence and more about simply being harder to destabilize when things get tense.

2. Sixes are the Enneagram’s threat detectors.

Sixes score highest in neuroticism (.53), meaning they are especially sensitive to risk and uncertainty. Evolutionarily, that sensitivity is likely extremely useful. Groups need people who spot danger, weirdnesses, and breaches of trust before everyone else does.

3. Fours and Sevens are equally curious about the new.

They score almost identically on openness (.42 vs. .39), which is surprising because their personalities look so different. Fours tend to explore new perspectives and inner experience, while Sevens explore new ideas and external experiences.

4. Fives are even less accommodating than Eights.

Fives score slightly lower in agreeableness (-.40) than Eights (-.38), meaning they may be even less willing to bend their preferences for other people. Eights resist openly, while Fives are more likely to quietly hold their ground.

5. Nines strongly prefer the familiar.

Nines score very low on openness (-.62), suggesting they are much less drawn than other types to novelty and constant change. The upside is a strong instinct for stability, continuity, and preserving what already works. In the human experience, that matters.

6. Ones don’t just see problems. They fix them.

Ones score .66 on conscientiousness, one of the biggest numbers in the entire chart. Their standards are backed by unusually strong follow-through; they get sh*t done.

7. Fives are introverted without being closed-minded.

Fives combine extremely low extroversion (-.61) with high openness (.39), which is notable because people may mistakenly assume that introversion means “disengaged” or “aloof.” Fives may want less social stimulation while remaining unusually curious about ideas and the world.

8. Sevens seem built to recover quickly.

They combine high openness (.39) with low neuroticism (-.36), meaning curiosity comes with relatively little tendency to stay stuck in stress or negative emotion. Their optimism may reflect a real ability to find another path quickly.

9. Threes may succeed through momentum more than discipline.

Their extroversion score (.45) is much stronger than their conscientiousness score (.24), which cuts against the stereotype of the hyper-disciplined achiever. Their edge may be energy, adaptability, confidence, and staying in motion.

10. Fours feel things more intensely.

Fours score high in openness (.42) and neuroticism (.33), meaning they are both receptive to experience and more emotionally affected by it. That sensitivity likely helps them notice meaning and nuance that others miss.

11. Twos are dependable for a different reason than you’d think. 

They’re the most agreeable type (.32) but relatively average in conscientiousness (-.04), suggesting that their famous reliability comes less from rules or discipline and more from genuinely caring about the people involved.

12. Eights are surprisingly open-minded.

Eights score .39 on openness—about the same as Sevens and Fives—which cuts against the stereotype of the rigid, forceful Eight. They may be unusually willing to explore new ideas and experiences as long as they get to judge them for themselves.

Shout out to the report authors!

“Relationships between OPQ and Enneagram Types,” 2005. Anna Brown and Dave Bartram.