🧩 Models & personality profiles
Personality & conflict models
Profile models applied to negotiation: DISC (W. M. Marston), Big Five (Costa & McCrae), Process Communication (T. Kahler), Thomas-Kilmann (TKI), social styles (Merrill & Reid).
Full detail in the “Origin & history” section below.
Author of the library
Negotiation lecturer at KEDGE Business School
A rare threefold background serving negotiation: teaching, commercial justice and audit, backed by experience as a company director in Bordeaux.
Process Communication (PCM) is a communication and personality model that distinguishes six types (Harmoniser, Thinker, Persister, Imaginer, Rebel, Promoter), each perceiving the world through a dominant "filter" (emotions, facts, opinions, reflection/inactions, reactions, actions) and responding to distinct communication "channels". Applied to negotiation, it makes it possible to diagnose in real time how one's counterpart functions, to adjust one's language to establish rapport, and above all to anticipate the "stress sequences" (drivers then failure mechanisms) that derail discussions. Its major value for the negotiator is to turn a relational blockage into a readable and actionable signal rather than a confrontation. It is a tool of situational adaptation, not a system for the fixed categorisation of people.
At a glance
Vigilance: low (3.5/10) · Preparation required: 7/10
Indicative profile: it situates the “Models & personality profiles” family as the Models & personality profiles school practises it, not this technique taken in isolation. Techniques from the same family and school therefore share the same profile. NEGOCOACH editorial rating out of 10, non-experimental · the higher the “relational risk” value, the more costly the technique is to the relationship.
NEGOCOACH assessment
Tactical potential 6.7/10 (effectiveness, impact, discretion) and vigilance low (relational and ethical risk): two distinct readings, deliberately never merged into a single score that would reward risk. NEGOCOACH editorial rating calibrated from the “Models & personality profiles” family and the “Models & personality profiles” school. Each criterion is rated out of 10; click to understand what it measures.
How far the technique can carry the negotiation in the intended direction when it is well executed.
Strength of the effect produced on the counterpart's perceptions, emotions and decisions.
How hard it is for the other party to notice the technique is being used. A high value = very discreet.
The information, analysis and rehearsal required upfront to use it effectively.
Potential cost to the relationship and to trust if the technique is spotted, refused or fails. A high value = riskier.
Moral acceptability: fairness, transparency and respect for the counterpart's autonomy. A high value = more defensible.
Documented school
The school this technique stems from is documented by recognised work and established practice, without experimental consensus. This indicator qualifies the school, not this technique taken in isolation.
Indicative NEGOCOACH editorial rating, for teaching purposes. For “Relational risk”, a high value signals a cost to the relationship, not a quality.
A model developed by the American psychologist Taibi Kahler (Ph.D.), stemming from his work on Transactional Analysis and the discovery of "drivers" (mini stress-scenarios) in the 1970s. Kahler formalises the Process Communication Model and validates his personality inventory (Personality Pattern Inventory, PPI) in 1982. The model gains its fame through its adoption by NASA (via chief psychiatrist Terry McGuire) for selecting and composing astronaut crews, a use maintained for nearly twenty years. Disseminated in France notably by Kahler Communication France.
PCM is an operational framework that posits that each person has the six personality types stacked in a specific order (a stable "base" and a "phase" that can evolve), each type having: a preferred perception mode, psychological needs to feed (e.g. recognition of work, recognition of convictions, playful contacts, solitude/structure, sensory stimulation), an effective communication channel, and a predictable three-degree stress sequence. In negotiation, the tool consists of (1) spotting the verbal and non-verbal cues revealing the counterpart's type and phase, (2) choosing the channel and register that "connect", (3) feeding the psychological need to maintain cooperation, and (4) detecting first-degree drivers to defuse stress before escalation.
Application by context
Facing a Thinker buyer, the seller structures their argument around quantified data, logic and ROI, whereas with a Harmoniser client they begin by creating a warm connection and personalising the relationship before any figure.
The buyer modulates their style according to the salesperson across the table: a directive, concrete channel with a hurried Promoter, an inquiring, factual channel with a Persister attached to their convictions, in order to obtain concessions without antagonising.
In a negotiation with labour partners, the HR director identifies a Persister delegate (values, commitment) and explicitly acknowledges the sincerity of their convictions before opening the debate on the facts, defusing the crusader posture.
In crisis management, spotting that a counterpart is tipping under stress (the "be strong" or "please others" driver) makes it possible to urgently feed their psychological need to bring them back to rational functioning before dealing with the substance.
A political negotiator adapts their framing to the targeted electorate or coalition partner: a register of values and conviction to mobilise the Persisters, a register of action and results for the Promoters.
The agent detects that a buyer couple has a Harmoniser base and sells the emotion of "home" and the family bond, whereas with a Thinker investor they align rental yield, taxation and market data.
In a cross-cultural context, PCM helps distinguish what stems from personality type (universal) from what stems from culture, avoiding wrongly attributing a silence or reserve to a national trait rather than to a need for structure or withdrawal.
In a family conflict (inheritance, separation), recognising that a Rebel relative needs playful contact and spontaneity, and another Imaginer relative needs time and calm, makes it possible to arrange the setting of the exchanges so that everyone stays cooperative.
Counter-techniques
Negotiation is also played on defence. Here is how to recognise this technique when it is used against you, and turn it around.
The signals that give it away
The counters that defuse it
Turn it into an advantage
Name the manoeuvre: said out loud, a technique loses most of its power.
Reacting emotionally instead of coming back to the facts.
Strengths: a very concrete and observable tool (words, tone, gestures) that gives the negotiator an immediate action grid; it shifts attention from the "what" to the "how" of communication, often the real source of blockages; it is predictive on stress, allowing dérailments to be anticipated; it values all personalities without hierarchy; it is teachable and field-tested (NASA, management, sales). Weaknesses: the scientific validity of the model and its inventory remains debated and little replicated in the independent academic literature; the "on the fly" diagnosis of a counterpart is fallible and quickly caricatural without certified training; a risk of reducing a person to a label; the model is proprietary (paid training, certification); it sheds light on the relationship but replaces neither the preparation on the substance nor the concession strategy.
Particularly useful in relational and repeated negotiations, where the quality of the bond conditions the agreement (complex sales, key accounts, labour dialogue, family mediation, team management). Valuable as soon as a blockage seems irrational or emotional rather than substantive, or when a counterpart shows signs of stress. Less relevant for purely one-off, anonymous or distributive transactions where one does not observe the person enough, and to be handled with caution without solid training.
Business · The selection of NASA astronauts, In the late 1970s, NASA's chief psychiatrist, Terry McGuire, called on Taibi Kahler to make the selection and composition of crews more reliable, where relational compatibility under extreme stress is vital. According to the model's histories, Kahler produced in about ten minutes assessments that converged with hours of tests and interviews, notably by spotting candidates' stress sequences. NASA used this methodology for nearly twenty years, which made PCM a reference for communication and stress management in high-pressure teams, transposable to any negotiation where the bond must hold under tension.
Sales · The blockage that was not about price, Representative scenario: an experienced salesperson was stuck with a buyer who kept raising detail objections and digging in. Reviewing the scene with the PCM grid, he identifies a Persister base whose conviction had never been acknowledged: his "objections" were a request for consideration of his values, not a disagreement on the price. By opening the next meeting with a sincere acknowledgement of his demand for quality and his commitment, then arguing on facts, he restores cooperation and closes. The knot was relational, not economic.
To recognise that a counterpart is "reading" you in PCM, observe whether they suddenly mirror your vocabulary, your channel and your pace, and whether they seek to feed a specific need (flattery targeted at your convictions, playful complicity, soliciting your expertise). The best defence is not to resist the good rapport, a smooth exchange serves you too, but to keep the substance at the centre: systematically return to the facts, the interests, the objective criteria and your fallback solution. Calmly name the process if you feel "managed" ("let's stay on the substance"), and monitor your own stress drivers so as not to be led into conceding under the effect of a fulfilled need rather than of an argument.
Limits: the model's empirical base rests largely on work and validation tied to its author and to the proprietary organisation, with few independent peer-reviewed replications; like any typological model, it risks confirmation bias and oversimplification. Ethics: the line between adapting to better understand and instrumentalising another's psychological needs is thin; use must remain transparent as to intent and respect the autonomy of the counterpart. A diagnosis made without certified training may be wrong and stigmatising; the model must never serve to discriminate or to reduce a person to a type.
Related techniques and models: Eric Berne's Transactional Analysis (ego states, transactions, OK/OK life positions), from which PCM is directly derived; the other profile models applied to negotiation (MBTI, DISC, Enneagram, Big Five/OCEAN); active listening and reformulation; NLP calibration and synchronisation (mirroring); emotional intelligence applied to the relationship; situational communication-style adaptation (e.g. Social Styles).
Quick exercise
Answer in your head, then reveal the solution. Memory is built through active recall.
Frequently asked questions
Process Communication (PCM) is a communication and personality model that distinguishes six types (Harmoniser, Thinker, Persister, Imaginer, Rebel, Promoter), each perceiving the world through a dominant "filter" (emotions, facts, opinions, reflection/inactions, reactions, actions) and responding to distinct communication "channels". Applied to negotiation, it makes it possible to diagnose in real time how one's counterpart functions, to adjust one's language to establish rapport, and above all to anticipate the "stress sequences" (drivers then failure mechanisms) that derail discussions. Its major value for the negotiator is to turn a relational blockage into a readable and actionable signal rather than a confrontation. It is a tool of situational adaptation, not a system for the fixed categorisation of people.
Yes. Used in good faith it stays within a fair negotiation: it structures the exchange without deceiving the other party. Being transparent about your intentions strengthens the long-term relationship.
Reacting emotionally instead of coming back to the facts. The right reflex: slow down and reformulate.
NEGOCOACH does not assess the experimental validation of this technique in isolation. What we document is the grounding of its source school (Models & personality profiles): documented school. Full detail is in the "At a glance" section of this page.
Practise with AI
Copy, paste into your assistant, replace the [brackets]. Works with ChatGPT, Claude, Gemini, Mistral, Perplexity.
Build your plan before the meeting
You are an expert negotiation coach. Help me prepare to use the "Process Communication (PCM)" technique in the following situation: [describe your situation]. Give me: the conditions for success, a 3-step script, my counterpart's likely objections and how to answer them.
Rehearse against an AI counterpart
Play the role of my counterpart in a negotiation. I am going to test the "Process Communication (PCM)" technique. React realistically and with resistance, do not give in too quickly, then at the end analyse my performance and suggest 3 concrete improvements.
Analyse a past negotiation
Here is how my negotiation went: [paste the exchanges]. Analyse whether the "Process Communication (PCM)" technique was used well, what worked, the mistakes made, and spell out precisely what I could have done better.
References
Founding works of the 🧩 Models & personality profiles school this technique belongs to.
Emotions of Normal People (origine du DISC)
BookW. M. Marston · 1928
Revised NEO Personality Inventory (Big Five)
Ouvrage de référenceP. Costa & R. McCrae · 1992
Thomas-Kilmann Conflict Mode Instrument
OutilK. Thomas & R. Kilmann · 1974
The Process Communication Model
OuvrageT. Kahler · 1982
Profile models applied to negotiation: DISC (W. M. Marston), Big Five (Costa & McCrae), Process Communication (T. Kahler), Thomas-Kilmann (TKI), social styles (Merrill & Reid).
On video
Videos to picture Process Communication (PCM) and anchor it through examples.
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Technique map
Every technique sits within a network: what it draws on, what it combines with, where it applies, and how to defend against it.
Spot its signals, neutralise it and turn it around with the defensive playbook on this page.
See the counter-techniquesProcess Communication (PCM) is a communication and personality model that distinguishes six types (Harmoniser, Thinker, Persister, Imaginer, Rebel, Promoter), each perceiving the world through a dominant "filter" (emotions, facts, opinions, reflection/inactions, reactions, actions) and responding to distinct communication "channels". Applied to negotiation, it makes it possible to diagnose in real time how one's counterpart functions, to adjust one's language to establish rapport, and above all to anticipate the "stress sequences" (drivers then failure mechanisms) that derail discussions. Its major value for the negotiator is to turn a relational blockage into a readable and actionable signal rather than a confrontation. It is a tool of situational adaptation, not a system for the fixed categorisation of people.
Name the manoeuvre: said out loud, a technique loses most of its power.
Reacting emotionally instead of coming back to the facts.
Our programmes turn theory into a concrete advantage.