Couple warning signs: the 4 behaviours that predict a split

John Gottman, an American psychologist, observed thousands of couples in the laboratory over several decades. His finding is remarkably precise: by watching a few minutes of a discussion between partners, he can predict with over 90% accuracy whether the couple will separate in the following years. What determines the outcome is not the subject of the argument — money, children, work — but the way the two of them speak to each other during conflict.

In the article that follows, I look at communication within a couple. If this theme resonates with you, I have designed a couple communication test that lets you take stock of your communication patterns as a pair. It comes with a guide to take the reflection further, beyond the results. Worth noting: I also make ScanMyLove available to you, a tool that analyses couple conversations from a simple export, to better understand the dynamics of a relationship.

Four behaviours, which he calls the "four horsemen of the apocalypse", predict a break-up better than any other indicator. Recognising them in your own relationship already puts you a step ahead.

Gottman's four horsemen

1. Criticism: attacking the person, not the problem

Every relationship involves complaints. A complaint is specific: "You forgot to call the doctor even though you said you would." Criticism, on the other hand, targets the other person's character: "You always forget everything. You really are irresponsible."

The difference is fundamental. A complaint says: something happened that caused me a problem. Criticism says: you are a defective person. And a person who feels defective defends themselves — rather than hearing what was at the heart of the problem.

Chronic criticism creates in the other person a constant need to justify themselves or to counter-attack, which sets up a dynamic of escalation rather than of resolution.

2. Contempt: the most dangerous signal

Contempt is the expression of superiority over the other. It can take the form of sarcasm, mockery, sideways glances, mocking imitations, gestures of disdain. It says, without saying it explicitly: you are beneath me, what you feel is worthless.

It is the behaviour that most strongly predicts a break-up — and also, according to Gottman, the strongest predictor of health problems in the partner on the receiving end. Where criticism attacks a behaviour, contempt attacks the other person's very identity.

Contempt often grows out of old, accumulated resentment — negative thoughts about the other person that have hardened to the point where none of their qualities can be seen any more.

3. Defensiveness: protecting yourself by attacking

Faced with a complaint or a criticism, some people respond by defending themselves immediately — counter-attacking, denying any responsibility, throwing the ball back: "It's your fault, if I forgot it's because you put me under pressure."

This stance, although understandable as a protective mechanism, signals to the other person: I cannot hear what you are feeling. And it escalates the conflict instead of defusing it.

4. Stonewalling: shutting the door

Stonewalling is when one partner disengages completely from the interaction. They stop responding, look away, leave the room or sink into silence. This reaction often occurs as protection against emotional flooding — the body says "stop" in the face of over-intense stimulation.

The problem is that the other person usually interprets stonewalling as indifference or rejection, which worsens the very escalation they were trying to escape.

What these behaviours reveal

The regular presence of these four behaviours does not condemn a couple to break up. What matters is their frequency and the absence of the opposite behaviours — what Gottman calls the "antidotes".

• The antidote to criticism is the soft start-up: begin by expressing a feeling (I feel) rather than accusing (you are).
• The antidote to contempt is building a culture of appreciation and respect: actively remembering what you value in the other person, and saying it.
• The antidote to defensiveness is taking shared responsibility: looking for the grain of truth in what the other person says, even when you disagree about the rest.
• The antidote to stonewalling is physiological self-soothing: taking an explicit break when the intensity crosses a threshold — not to avoid the issue, but to calm down before coming back to it.

When the situation goes beyond what you can handle alone

Gottman and his team have shown that badly damaged couples can rebuild — on condition that the destructive spirals are interrupted. Couple therapy focused on these mechanisms (including the Gottman method itself) can be decisive when the four horsemen have become the relationship's usual way of functioning.

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