The four temperaments, and what modern psychology kept

The four temperaments are the oldest personality model still in circulation. They are also, awkwardly for anyone who enjoys mocking ancient medicine, closer to modern trait psychology than they have any right to be.

Where they came from

The scheme grew out of Greek medicine, where health was explained as a balance of four bodily fluids: blood, yellow bile, black bile and phlegm. The idea is associated with the Hippocratic writings of the fifth and fourth centuries BCE, and it was Galen, some six hundred years later, who worked it into a description of character rather than only of illness. An excess of one fluid was thought to produce a recognizable kind of person.

The physiology was wrong in every particular. The classification outlived it anyway, which is the interesting part. It ran through medieval medicine, through Renaissance writing on character, into Kant, who discussed the four at length in his lectures on anthropology, and into the beginnings of experimental psychology.

Wundt, at the end of the nineteenth century, made the move that matters here. He observed that the four are not four independent kinds and proposed arranging them along two underlying dimensions instead, one concerning the strength of emotional response and one its speed. That is a two-by-two, and it is the direct ancestor of what came next. Eysenck later built a trait model on two dimensions he called extraversion and neuroticism, and pointed out that the four classical temperaments sit in its four quadrants (Eysenck, 1967).

Two thousand years of a scheme surviving the theory that produced it is either a long-running failure of skepticism or evidence that people kept noticing something real. This page argues for the second, with the parts that did not survive stated plainly.

The four, described

Sanguine — quick to engage, quick to enthuse, quick to move on. Warm, talkative, not especially troubled by things that trouble other people. The failure mode is follow-through.

Choleric — driven, direct, fast to decide and fast to push. Comfortable with conflict, sometimes to the point of generating it. The failure mode is friction.

Melancholic — deep, careful, exacting, prone to turning things over. Notices what is wrong before anyone else does, including with themselves. The failure mode is the turning-over.

Phlegmatic — steady, calm, hard to rattle, content in low gear. The one people describe as unflappable. The failure mode is inertia.

Read those four and you will probably find yourself somewhere, and also find yourself objecting that you are two of them. Hold that objection — it is the most informative thing about the model.

The same four, at length

The one-line versions are useful for sorting and thin for recognizing. Here is what each looks like across a week.

The sanguine arrives with energy and leaves before the tidying. They are the reason the plan happened at all, and the reason nobody wrote down what was decided. Their reaction to a setback is to find the next thing, which reads as resilience and sometimes is. Where it costs them is depth: the project that needed one more unglamorous month, the friendship that needed the difficult conversation rather than a good evening.

The choleric converts a problem into a decision faster than anyone else in the room, and is willing to be disliked for it. They tend to be right about the direction and impatient about the route. What they underrate is the cost of the friction they generate, because the friction is not expensive to them. The recurring surprise of a choleric life is discovering that a settled matter is still live for everybody else.

The melancholic sees the flaw first. That is a real skill and it arrives attached to a bill, because seeing the flaw first means living with it longest. Work done in this mode is usually the most thorough in the building, and the person doing it is usually the least convinced of that. The characteristic error is treating a private standard as an obvious one and then being baffled that nobody else is troubled.

The phlegmatic is the one everybody wants in a crisis and nobody notices in an ordinary week. Things land softly and clear quickly, which makes them steady company and hard to move. What looks like agreement is often absence of strong preference, and the cost shows up as drift: years spent in a situation that was never actively chosen, because nothing about it ever generated enough discomfort to force a decision.

The bit worth noticing

The four are not four separate things. They are what you get when you cross two dimensions.

One dimension is outward versus inward: how much you engage, initiate, push into the world. Sanguine and choleric sit on the outward side; melancholic and phlegmatic on the inward.

The other is reactive versus steady: how strongly things land and how long they stay. Choleric and melancholic run hot; sanguine and phlegmatic run cool.

Cross them and the four temperaments fall out exactly:

	Steady	Reactive
Outward	Sanguine	Choleric
Inward	Phlegmatic	Melancholic

That is not a coincidence and it is not us imposing a modern frame on an old idea. It is the structure that was always in there — and it is why you can find yourself in two of the four. You are not two temperaments. You are a position on two dials, and the four names are just the corners.

This is the same 2x2 our own map is built on, which is the least original thing about us and the part we are most confident in.

Why do I feel like two of them?

Because you are, and the model is built in a way that guarantees it.

Adjacent corners share a dial. Choleric and melancholic are both reactive and differ on the outward one. Sanguine and choleric are both outward and differ on how strongly things land. So a person sitting near the middle of one dimension and toward an end of the other will read as two temperaments, and the two they read as will be neighbours rather than a random pair.

The diagonal case is different and worth checking. If you recognize yourself in sanguine and melancholic, opposite corners, the usual explanation is not that you contain multitudes. It is that you behave differently in different settings, which is a fact about your circumstances rather than your position. Watch what you do with an unstructured week rather than a demanding one.

There is a third possibility, which is that the reading is genuine and sits close to the middle of both dials. That is the most common place to be and the worst served by a four-name scheme, because the middle has no name in it.

Which one am I?

Two questions get you most of the way, and neither is about parties.

Does time with people leave you fuller or emptier? Fuller puts you in the sanguine or choleric half. Emptier puts you in the melancholic or phlegmatic half. This is not about whether you enjoy company or are good at it, only about what it costs you.

When something goes wrong, how long does it stay with you? Minutes puts you in the sanguine or phlegmatic half. Hours or days puts you in the choleric or melancholic half. The choleric and the melancholic differ in what they do with it, outward or inward, and not in how loudly it arrives.

Cross your two answers and you have your corner. The honest caveat is that a two-question version gives you a rough position with no sense of how far from the middle you are, which is most of what a reading is for.

If your answer to either question was "it depends", that is an answer rather than a failure to have one. It puts you near the middle of that dial, and it means the corner you land in will change with your circumstances while your actual position stays where it is. People in that situation are usually better served by two numbers than by a name.

Is this the same as the five-factor model?

Two of the dimensions line up closely, and the others have no counterpart in the old scheme.

The trait tradition that grew out of decades of work on descriptive vocabularies converged on a five-factor structure, with extraversion and neuroticism among the first and largest factors to separate out (Digman, 1990). Those two are the pair Eysenck placed the temperaments on, and they are the two this site measures. The remaining factors, the ones covering conscientiousness, agreeableness and openness to experience, describe real and useful differences that the four temperaments say nothing about. A sanguine can be meticulous or chaotic. The scheme has no room to record which.

So the honest summary is that the temperaments are a coarse two-dimensional map that survived because those two dimensions carry a great deal of what people notice about each other, and not because the ancients had the whole picture.

The four temperaments and the four regions of our map

We use different names for the same four corners, and the translation is exact because the underlying dials are the same two.

Classical name	Our name for the region	Reads as
Sanguine	Calm Extravert	Outward, things land softly
Choleric	Sensitive Extravert	Outward, things land hard
Phlegmatic	Calm Introvert	Inward, things land softly
Melancholic	Sensitive Introvert	Inward, things land hard

The modern names are duller and they earn their dullness. "Melancholic" carries two thousand years of freight about black bile, artistic suffering and moral weakness, none of which is in the reading. "Sensitive introvert" says what the two dials did, and nothing else. The classical names remain the better ones for recognizing yourself in a paragraph, which is why this page uses them.

The mixed types the old writers used, the choleric-melancholic and the sanguine-phlegmatic, are the same observation this model makes about people near a boundary. They were describing continuous positions with the only vocabulary they had, which was a list of corners and a way of hyphenating them.

What did not survive

Plenty, and it is worth being straight about it.

The humours are gone. Blood, yellow bile, black bile and phlegm are not why anyone is the way they are, and the medicine built on that idea did real harm for centuries.

The four boxes are gone too, in the sense that matters. Nobody is purely one. Positions on two continuous dials produce a smear across the whole space, with the corners as landmarks rather than destinations. Most people are nearer the middle than any label suggests.

And the moral ranking is gone — the long tradition of treating one temperament as the ideal and the others as deviations from it. There is no best corner. Each combination is good at things the others are not, and costs something the others do not pay.

Why it feels so accurate

Part of the answer is that two dimensions do a lot of work. Part of it is less flattering, and a page arguing for the model should say so.

Descriptions of character written in the second person are easy to agree with when they are broad enough. Forer demonstrated the effect by handing an entire class the same personality sketch and finding that nearly all of them rated it as an accurate account of themselves (Forer, 1949). Any scheme with four descriptions inherits some of that, and the older and more literary the descriptions, the more of it they inherit.

The test that separates a real reading from a flattering one is whether it can be wrong about you. A description that would fit you whichever corner you landed in is not telling you anything. When you read the four above, the useful question is not which one sounds like you. It is which one sounds least like you, and whether you would have said so before you read them.

The limits, stated plainly

The scheme says nothing about your work, and we make no claim about which temperament suits which occupation. That claim is made constantly elsewhere on far less evidence than its confidence implies.

It is not a health matter either. These are descriptions of ordinary variation, our tests are not clinical instruments, and a temperament is not a condition.

And positions move. A reading is where you sit now, not a permanent assignment, and the drift over a life is slow but real. If the four names have ever felt roughly right but not quite, that is because they are corners of a space you sit somewhere inside.

Where you sit

The four temperaments test gives you the classical reading with modern scoring. The free Personality Map gives you the two underlying dials directly, which is the same information with the labels removed and the precision added. The argument that the popular four-letter systems are re-describing a small number of continuous dimensions is set out in the science section.