Face

The face is not a single unit

This is the organising idea of the whole chapter, and it changes the way you look.

The face is a set of semi-independent facial features: the lips, the cheekbones, the eyes, the outer corners of the eyes, the eyebrows, the eyelid folds, the nose, the ears. Each feature is under a different degree of control. The diagnostic value does not lie in any one feature, it lies in how far they are in synchrony with one another.

Someone smiling without the eyes lifting — only the mouth is smiling. The gap between the features tells you how much effort the person is making, how far the forcing goes.

A small but useful note: the ears are the feature almost nobody can control. The proportion of people who can move their ears at will is very low. When the ears redden or grow hot, that is an autonomic reaction, not a choice.

The four-level smile scale

The anatomical basis is very compact: the smile is driven by two sets of muscles, and their degrees of control are completely different.

Asymmetry

A quick and very reliable test, based on the way the brain divides the work.

The smile is a submission signal

This explains a good deal, and it runs against the way we normally think about smiling.

Chimpanzees have two kinds of smile, and both are submission gestures. The first — mouth open, lower teeth showing, the corners of the mouth drawn back and down — carries the message “I am no threat, I am anxious”. The second — teeth bared, the corners of the mouth and of the eyes pulled up, with a sound — carries the message “I am not a threat, I am only a mischievous child”.

The most counter-intuitive finding in the whole set

There is a secondary feature worth recording: a liar’s smile appears faster than an honest one and is held longer, as though they were wearing a mask. This is a direct application of the timing law in chapter 05.

Five common smiles

The opposite of the smile is the turned-down mouth — both corners drawn low. It reports unhappiness, sadness, dejection, or strain. One point worth noting: held long enough, it becomes a permanent feature, and people tend to keep their distance and make less eye contact with anyone who wears it.

Contagion and mirror neurons

In an experiment with about a hundred and twenty volunteers, electrical signals from the facial muscles were measured while they were shown photographs of happy and angry faces, with instructions to react in the opposite way to the picture.

The result: the participants could not fully control their own facial muscles. With a picture of an angry person, asking them to frown was easy, but asking them to smile was very hard. And the twitching of the facial muscles showed that they were reproducing exactly the expression they were seeing, even while trying to do the opposite.

Eight hand-to-face gestures connected with withholding information

The basis of this group is the image of the “three wise monkeys” — hear no evil, see no evil, speak no evil. When we see, hear or speak something false, the hand tends to go up to cover the mouth, the eyes or the ears.

age 5     : the WHOLE HAND clamps over the mouth, instantly
teenager  : only the FINGERS brush lightly around the mouth
adult     : the hand rises toward the mouth but AT THE LAST MOMENT turns into a NOSE TOUCH

A counter-example worth remembering

An interviewee suddenly covered his mouth and rubbed his nose for a few seconds before answering, then went back to being at ease. Asked about it afterwards, he explained: on hearing the question he thought of two ways of answering — one negative and one positive. While he was thinking about the negative answer and how the interviewer might react, he covered his mouth. When he switched to the positive answer, he took the hand away.

The gesture was entirely genuine. The reading “he is hiding something” was entirely wrong. This is why the cluster law exists.

The boredom scale — the presenter’s thermometer

The evaluation scale — the position of the fingers decides the meaning

The evaluation gesture is often mistaken for the gesture of interest. The detail that separates them is the thumb: a thumb propping the chin reveals a critical attitude. And a rule about duration: the longer someone holds the evaluation cluster, the longer the critical attitude lasts — which is the sign to act at once, either by drawing them into the discussion or by finishing.

Chin stroking — the signal with the highest predictive value

Microexpressions — put in their proper place

All four uses share one structure: the microexpression is used to detect a contradiction, and it is never used on its own. That is the synchrony law at work.

Try scoring these three photographs on the four-level scale. Then ask someone else to score them independently and compare. The gap between the two of you is an objective measure of how far your practice has got.

Zone 7 reading matrix

⚠️ Read only once the threshold has been crossed. Every row in the table below carries data only when the other person has left their own baseline — chapter 06. Inside the mute band, those same behaviours carry zero bits. And once the threshold has been crossed, they still give only sign, intensity, timing — not content (chapter 08).

The six traps of Zone 7

• The “double meaning” trap — see the counter-example block above. People cover the mouth because they are weighing two answers, not because they are lying. The hand-to-face group is misread more often than any other group in the book.
• The natural asymmetry trap — a human face is inherently asymmetrical. Compare only with that person’s own baseline.
• The medical trap — dermal fillers, facial muscle-paralysing injections, facial nerve palsy, the after-effects of a stroke and Parkinson’s disease invalidate the whole smile scale and the asymmetry check. Observe, or ask, first.
• The microexpression trap — if you can see it clearly, it is not a microexpression. And it reports emotion only, not deception.
• The smile-reversal trap — the belief that “a lot of smiling means something is being hidden” runs against the data.
• The contagion trap — you cause what you measure. Walk in with a tense face and you will measure your own tension, reflected back.

Zone 7 intervention

Chapter summary

• The face is not a single unit. It is a set of semi-independent facial features, and the diagnostic value lies in how far they are in synchrony with one another, not in any one feature. The ears are something almost nobody can control — ears reddening or growing hot is an autonomic reaction, not a choice.
• The four-level smile scale: lips · + cheekbones · + crow’s feet at the corners of the eyes · + the fold between the eyebrow and the lid dropping. Only level four is close to impossible to fake; crow’s feet still appear in a sophisticated fake smile. Use the scale as a measure of how much effort is being made: when the setting calls for a high level and the person is only at a low one, the forcing is that much greater. Saying “cheese” pulls only the large cheekbone muscle, which is why photographs look forced.
• When in doubt, compare the left half with the right half. The right hemisphere specialises in expression and it sends its signals to the left half of the body, so manufactured emotion shows more on the left. In a genuine smile the two sides are in synchrony.
• A smile is in essence a concession. Both of the chimpanzee smiles are submission gestures. Someone who has just nearly been hit by a car will smile — that is a fear reaction borrowing the submission channel, not pleasure. And figures seen as dominant hardly ever smile for the camera.
• Liars smile LESS; truthful people smile more. Innocent people raise the frequency of their smiling to soothe the person accusing them. The finding holds whatever the culture, and is stronger in men. A liar’s smile also appears faster and is held longer, like a mask.
• You cause the very thing you measure. In an experiment with about a hundred and twenty volunteers asked to react in the opposite way to the pictures they were shown, the facial muscles still reproduced exactly the expression they saw. Walk in with a tense face and you will measure your own tension, reflected back from the other person.
• Hand-to-face gestures grow subtler with age: at five the whole hand is clapped over the mouth, a teenager only rubs a finger around the mouth, an adult raises the hand and then at the last moment turns it into a touch of the nose. A compulsory distinction: a nose touch is a light, quick stroke; a real itch is a hard, repeated scratch with no relation to the content. A neck scratch averages exactly five times.
• That whole group of gestures licenses only the conclusion that information may be being withheld — not that a lie is being told. And putting a finger in the mouth is quite unlike the other seven: it is a need for pacifying, so the right move is to provide a feeling of safety, not to raise the pressure.
• A thumb propping the chin is criticism, not interest; a hand resting lightly against the cheek without supporting the head is what genuine interest looks like. And drumming the fingers on the table or tapping a foot is NOT boredom — it is impatience, and the faster the beat the greater the impatience.
• When you see chin stroking, say nothing and wait for the next signal. Folded arms, crossed legs, sitting back in the chair are a “no” — restate the offer before the refusal is spoken. With a glasses wearer: putting them back on means they want to look again, putting them away means they want to finish, throwing the glasses onto the table is refusal.
• A microexpression lasts 1/15 to 1/25 of a second, is entirely universal, and can be trained — trainees reach over 70%, some over 90%. But they have no reliable relation to deception: they report genuine emotion only, and are used solely to detect a contradiction, never on their own.