Deception Reader
Lisez les signes que les gens ne savent pas qu'ils montrent
Lisez les gens à la recherche d'indices de tromperie : comportement de base vs comportement sous stress, motifs de langage comme les dénégations absolues et les détails manquants, et les signaux non verbaux — avec un calibrage honnête pour que vous évaluiez sans sauter aux conclusions.
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Contenu du pack
Un fichier SKILL.md (le guide pratique) + un modèle de départ. Aperçu :
Deception Reader
When to use
- You're negotiating (salary, contract, partnership)
and need to weigh whether the other side's assurances are solid or performed. - You're interviewing a candidate, founder, or vendor
and want to read past the polished narrative to the real track record. - Someone's story doesn't add up — the details shift between tellings —
and you want a structured way to test it instead of going on gut feel. - You're conducting due diligence, a post-mortem, or a difficult conversation
where the stakes make honesty load-bearing. - You want to get better at reading people generally:
meetings, pitches, press interviews, depositions. - You're preparing for a high-stakes conversation yourself
and want to know what your own signals will look like under pressure.
Workflow
- Establish the baseline (input: 10–15 minutes of low-stakes conversation → output: baseline profile)
Before you probe anything important, watch how the person talks
when nothing is at stake:
- Their normal pace: fast, measured, or slow?
- Their gesture range: expansive, moderate, or still?
- Their eye-contact rhythm: bursts, steady, or avoidant?
- Their detail level: do small questions get rich answers or thin ones?
- Their hedging style: do they hedge often, commit hard, or mix it?
A baseline is personal — some people always fidget,
some always speak in absolutes, some never hold eye contact.
You are not looking for "lying behavior";
you are looking for *this person, acting unlike themselves*.
Without a baseline, every observation is noise.
The famous "I've never lied" moment only lands because the baseline expectation —
that any adult can name at least one lie —
makes the deviation visible.
Write the baseline down *before* the high-stakes part begins.
Memory rewrites the baseline to fit the conclusion; the notebook doesn't.
- Ask for specifics, then listen to the language (input: open questions → output: language-pattern notes)
Ask questions that require concrete detail:
"Walk me through what happened on Tuesday."
"Who else was in the room?"
"What did you do first, exactly?"
Then note the patterns — and record the quotes verbatim,
because paraphrase loses the exact wording that carries the signal:
- Absolute denials: "I have *never* lied," "I *always* tell the truth."
Honesty rarely needs a superlative;
the absolute is doing the work the evidence can't. - Inability to give a single specific example:
deflection to generalities when a concrete instance is requested.
"I've told so many truths I can't pick one" is the tell, not the answer. - Over-qualifying: "To be perfectly honest," "frankly," "believe me."
The qualifiers cluster around the sentences that need them least —
or most. - Distancing language: "that woman," "the situation,"
passive constructions where "I" should be ("mistakes were made").
Distance in grammar often tracks distance from the truth. - Chronology gaps: the story has a detailed middle and a blurry beginning.
Deception is usually constructed around the event, not the context —
so the context is where the construction shows. - Answering a different question: the response is fluent and detailed
but subtly addresses the question you didn't ask.
Note which pattern, which quote, and which question prompted it.
- Watch for stress deviations (input: high-stakes questions → output: deviation log)
When the topic turns to what matters, compare against the baseline:
- Pace changes: sudden hurry, or sudden carefulness —
the words start racing or each one gets weighed. - Gesture changes: hands that talked freely go still,
or stillness breaks into fidgeting. - Response latency: the pause before an answer that used to come instantly —
or an answer that now comes *too* fast, rehearsed to the millisecond. - Vocal changes: pitch rising, volume dropping, filler words appearing
or disappearing versus their normal speech.
Note what changed, what the baseline was, and exactly which question
triggered it.
One deviation is curiosity;
a cluster of deviations around the same topic is a direction to dig.
And deviations that *stop* the moment the topic changes
are more informative than the ones that linger.
- Read the non-verbals in context (input: deviation log → output: contextualized cues)
Non-verbal cues only mean something against the baseline and the question.
Never read them as a checklist — read them as a comparison:
- Eye behavior: breaking a normal contact rhythm,
or sudden over-steady staring.
Both are deviations, not opposites — compare to *their* normal,
not to a textbook. - Micro-expressions: a flash of an emotion that contradicts the words —
contempt while claiming respect, fear while claiming confidence.
They last a fraction of a second; you catch them by watching,
not by trying. - Self-soothing: touching face, neck, or hands
when the topic gets specific.
The body comforts itself when the story doesn't. - Posture shifts: leaning away, barrier-building (arms, objects, laptop lids)
landing exactly on the hard question.
Weight each cue low on its own.
The power is in convergence:
a language pattern + a stress deviation + a non-verbal cue,
all pointing at the same sentence.
- Calibrate and test (input: cues → output: hypothesis + test plan)
Turn observations into a testable hypothesis, not a verdict:
"I think the timeline claim is the weak point,
because the language went vague, the pace doubled,
and the eye contact broke — all at that one question."
Then test it — deception readers don't conclude, they *probe where the smoke is*:
- Re-ask from a different angle later in the conversation
and compare the two versions detail by detail. - Request a document that would corroborate the claim
(an email, a receipt, a dated record). - Ask an open question you already know the answer to
and watch how the known truth is handled —
it calibrates everything else they tell you.
If the hypothesis survives three independent probes,
upgrade it to a working belief.
If a single probe clears it, drop it — holding on past that point
is confirmation bias, not reading.
- Write the read (input: everything → output: one-page read)
Summarize in one page:
- The baseline, in three lines.
- The two or three strongest cue clusters —
each with the verbatim quote, the observed deviation,
and the question that triggered it. - The hypothesis, in one sentence.
- What would confirm it, and what would kill it
(the falsification condition). - The decision the read informs —
not "they're lying" but "don't sign until X is verified"
or "ask Y in the follow-up." - The mandatory caveat line:
no single cue proves lying.
A read that can't name its own falsification condition
is just suspicion with formatting.
Keep your reads. Over time they become the training data
that makes your baseline sense — and your self-honesty — sharper.
Aperçu du modèle
Deception Reader Worksheet
Use this worksheet when someone's story doesn't add up — negotiations, interviews, diligence, hard conversations. Fill it in, then write the read.
1. Baseline profile
Spend 10–15 minutes on low-stakes topics first. Capture how they talk when nothing is at stake.
- Normal pace: [fast / moderate / slow]
- Gesture range: [expansive / moderate / still]
- Eye-contact rhythm: […]
- Detail level in answers: [rich / moderate / sparse]
- Hedging style: [hedges often / commits / mixed]
- Anything else distinctive: […]
*Without a baseline, every observation is noise.*
2. Language-pattern notes
Le pack de compétence lui-même (SKILL.md + modèle) est rédigé en anglais.
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