What does it mean to score in the middle of a trait?

The results came back and four of the five bars are sitting near the middle. Not high, not low. You read the description and it says something like “you balance both tendencies”, which is the kind of sentence that could be written about anyone, and you close the tab feeling slightly cheated — as though the test looked at you and declined to commit.

It is a common reaction and it rests on a wrong assumption about what these scores are.

The short answer

A mid-range score means the centre of your distribution sits in the middle. It is not a failure to detect anything and it is not a missing result.

The mistake underneath the disappointment is expecting a type. There aren’t any. Across 102 taxometric studies of personality, older work lacking proper comparison data found types 65% of the time — but studies using the correct method supported a typological model in just 3.9% of findings, and the author concludes personality types are “exceedingly scarce or non-existent.” An earlier quantitative review of 177 taxometric studies covering 533,377 participants reached the same verdict for normal personality: dimensional, not categorical. There is no introvert category and no extravert category for you to be stranded between.

And “ambivert”, the word usually offered at this point, is not a scientific construct. It was coined in 1923, failed to gain traction among psychologists for most of a century, and re-entered circulation largely through sales and popular psychology.

If there are no types, what is my score actually describing?

Your average, across a range of behaviour you move through constantly.

The most useful reframing comes from Fleeson (2001), who had people report their behaviour repeatedly over two to three weeks. What he found is that “the typical individual regularly and routinely manifested nearly all levels of all traits in his or her everyday behaviour.” You are talkative at some points in a week and quiet at others — not occasionally, but as a matter of course.

In fact, for extraversion, the variation within a single person over a fortnight was greater than the variation between people. What stayed remarkably stable was the mean of each person’s distribution.

So the score is a centre of gravity, not a setting. A high extraversion score does not mean always outgoing; it means the middle of your range sits high. A middling score means your range is centred in the middle — which, given that the traits are continuous and normally distributed, is simply the most populated place to be. That’s arithmetic about bell curves rather than a finding about you.

Doesn’t that mean the middle is less meaningful?

No, and the intuition that it might is worth examining because it is probably backwards.

There is no evidence I can point to that mid-range scores are less reliable or less predictive than extreme ones. If anything, for the kind of rating scales these tests use, measurement precision tends to be highest near the middle of the distribution, where most of the items are doing their work. The sense that an extreme score is “more real” is a psychological reaction to a vivid description, not a property of the measurement.

What is true is that a middling score is less informative about what makes you distinctive — not less accurate, less distinguishing. If four traits sit near the average, the interesting information is in the fifth, and in the facets underneath each one.

Is the “ambivert advantage” real?

There is one well-known study, its effect is small, and the best-powered follow-up did not find the same thing for extraversion.

Grant (2013) tracked 340 call-centre representatives over three months. The linear relationship between extraversion and revenue was not significant; the curved one was (β = −0.13, p < .01), with predicted revenue peaking mid-scale. Mid-range reps averaged $154.77 an hour against $120.10 for introverts and $125.19 for extraverts.

Three things the popular retellings leave out. The curvilinear effect explained 2% of the variance — Grant says so himself and argues for its importance on practical rather than statistical grounds. The headline “24% more revenue” figures come from splitting a continuous variable into bins after the fact, and the confidence intervals for the groups overlap across most of their range. And it is one study, one organisation, one job — outbound cold-calling.

A 2025 study using interpretable machine learning on 1,190 employees looked for exactly these curved relationships across all five traits. Nonlinear models beat linear ones only “slightly yet consistently”, and the trait showing a noticeable curve at the factor level was conscientiousness — not extraversion. Extraversion contributed mainly through a single facet in particular sales roles.

So: a narrow, job-specific effect rather than a general advantage to being in the middle. Being mid-range is not a superpower, and the fact that it keeps getting sold as one should tell you something about where the term came from.

Could a middling score just mean I answered inconsistently?

Possibly, and it is worth knowing how to tell.

A score lands in the middle by several different routes. You might be genuinely balanced — high in some situations, low in others, averaging out. You might be ambivalent about the items. You might have been uncertain what the question meant. Or you might have been clicking the middle option to get through it.

Research on midpoint responding finds that people interpret the middle option in quite different ways — “no opinion”, “don’t care”, “unsure”, “neutral”, “equal/both”, “neither” are all common readings of the same button. Those are not the same mental state, and they produce the same data point.

The practical check is the facets. If your overall extraversion is average because warmth is high and excitement-seeking is low, that is a real, specific profile and it will feel recognisable when you read it. If every facet is also sitting flat at the midpoint, that pattern is more consistent with midpoint responding than with a personality, and retaking it while actually considering each item is worth an hour.

So what should I do with a middling profile?

Read down a level, and stop waiting for a label.

• Go to the facets. An average trait made of two extreme facets is a far more useful description than the number above it, and it is the most common reason a headline score looks flat.
• Find the trait that isn’t average. If one score departs from the middle, that is where your distinctiveness lives, and it usually explains more about you than the four that don’t.
• Don’t buy the type. No amount of mid-range scoring makes you a third category, because there are no categories. The research on this is about as settled as personality research gets.
• Expect to behave across the range. You will be the quietest person in one room this week and the loudest in another. On the evidence, so will everyone else.

The disappointment of a middling result comes from expecting a test to hand you an identity. What it actually offers is a description of where your behaviour tends to centre — and for most people, on most traits, that centre is somewhere in the middle. That is not the test declining to commit. That is the finding.