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.
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The Johari Window
Models & personality profilesTechnique 389 / 360
Author of the library
Alexandre Baumberger
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.
Teaching, KEDGE Business SchoolNegotiation lecturer since 2014 (12 years).
Commercial justice, Commercial CourtJudge from 2018 to 2026: litigation, then insolvency proceedings.
Audit & advisory, over 20 yearsTax, employment and financial audit in major firms, for large groups.
The Johari Window is a model of interpersonal awareness that sorts what is known to oneself and to others into four zones: open, blind, hidden and unknown. In negotiation, it serves as a relational compass: trust is built by enlarging the open zone through two levers, self-disclosure (sharing information about oneself) and soliciting feedback (agreeing to receive it). Shrinking the blind and hidden zones reduces misunderstandings, reveals real interests and smooths the exchange. It is less a pressure tactic than a framework for consciously steering the degree of openness according to the climate and the stakes.
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
How to read this rating
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.
Effectiveness7/10 · High
How far the technique can carry the negotiation in the intended direction when it is well executed.
Psychological impact7/10 · High
Strength of the effect produced on the counterpart's perceptions, emotions and decisions.
Discretion6/10 · High
How hard it is for the other party to notice the technique is being used. A high value = very discreet.
Preparation7/10 · High
The information, analysis and rehearsal required upfront to use it effectively.
Relational risk3/10 · Low
Potential cost to the relationship and to trust if the technique is spotted, refused or fails. A high value = riskier.
Ethics7/10 · High
Moral acceptability: fairness, transparency and respect for the counterpart's autonomy. A high value = more defensible.
Level of evidence
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.
Summary The Johari Window
Origin & history
A model created in 1955 by two American psychologists, Joseph Luft (1916-2014) and Harrington Ingham (1916-1995), within the movement of group dynamics and the T-group (Western Training Laboratory in Group Development, UCLA). The name "Johari" is a contraction of their first names (Joe + Harry). Originally presented in "The Johari Window, a graphic model of interpersonal awareness" (Proceedings of the Western Training Laboratory in Group Development, 1955), then popularised by the works of Joseph Luft, notably "Of Human Interaction" (1969).
Definition and principle
A two-axis grid crossing "known / unknown to oneself" and "known / unknown to others", generating four quadrants: (1) Open zone (what I know about myself and the other also knows: shared information, the basis of cooperation); (2) Blind zone (what the other perceives about me but I am unaware of: mannerisms, non-verbal signals, the real impact of my proposals); (3) Hidden zone or façade (what I know and do not say: my BATNA, my constraints, my true priorities); (4) Unknown zone (what neither I nor the other yet knows: latent needs, room for creativity). Operationally, one acts on two levers, disclosure (moving from the hidden zone to the open one) and feedback (moving from the blind zone to the open one), in order to deliberately size transparency.
Objectives of the technique
Build trust by progressively enlarging the open zone through calibrated and reciprocal disclosures.
Reduce the blind zone by actively soliciting the other party's feedback on their perceptions and expectations.
Strategically manage the hidden zone: decide what information to reveal, when and why, without either exposing or concealing everything.
Explore the unknown zone to bring out latent interests and creative options of mutual added value.
Diagnose the relational climate and adjust one's degree of openness to the stakes, the trust available and the counterpart's culture.
Concrete examples of application
Application by context
The same technique, across every negotiation settings
The seller enlarges the open zone by honestly sharing a limitation of his offer (disclosure) and by asking the client what really matters to them (feedback), turning a transactional relationship into lasting trust.
Context 2 / 8
Procurement negotiation
The buyer solicits the supplier's feedback on his own ordering practices (lead times, volumes) to shed light on his blind zone, while keeping his ceiling budget in the hidden zone until the tactically opportune moment.
Context 3 / 8
Labour negotiation
In an employer-union negotiation, management reduces its blind zone by listening to feedback from the field, and progressively discloses its real economic constraints to build a climate of shared responsibility rather than distrust.
Context 4 / 8
Crisis management
Faced with a hostage-taker or a tense situation, the negotiator first opens his own window (naming himself, making his intentions explicit) to reassure, then probes the other's unknown zone, their unspoken fears and needs, in order to defuse the situation.
Context 5 / 8
Political negotiation
During talks between parties, a controlled disclosure of red lines and a request for feedback on the sticking points reduce the ascribing of ulterior motives (mutual blind zone) and make the compromise legible to the grassroots.
Context 6 / 8
Real-estate negotiation
The seller who spontaneously reveals a defect of the property (disclosure) and asks the buyer about their life project (feedback) enlarges the open zone, defuses suspicion and speeds up agreement on a price perceived as fair.
Context 7 / 8
Cross-cultural negotiation
In a context of high power distance or implicit communication, the negotiator adapts the pace of openness, slower disclosure, more indirect feedback, because an excess of Western transparency can be perceived as an intrusion and inflate the cultural blind zone.
Context 8 / 8
Family negotiation
During an inheritance division or a family conflict, each person is invited to say what they leave unsaid (hidden zone: resentments, expectations) and to hear the effect of their words on others (blind zone), in order to break out of the unspoken issues that block agreement.
Counter-techniques
Spot and neutralise this technique
Negotiation is also played on defence. Here is how to recognise this technique when it is used against you, and turn it around.
Detect
The signals that give it away
A sudden imbalance in the exchange
Pressure to decide quickly
An argument you cannot verify
Neutralise
The counters that defuse it
Slow down and reformulate
Ask for facts and sources
Concede nothing without a counterpart
Turn around
Turn it into an advantage
Name the manoeuvre: said out loud, a technique loses most of its power.
The trap to avoid
Reacting emotionally instead of coming back to the facts.
Strengths and Weaknesses
Strengths: a simple, visual framework that makes an abstract object (trust) tangible; it links openness to the quality of the agreement; it provides two actionable levers (disclosure and feedback); it values listening and self-reflexiveness, often neglected in negotiation; it helps to spot one's blind spots. Weaknesses: a descriptive and non-predictive model, with no metric; it assumes a shared good faith that distributive or adversarial negotiations do not offer; transparency can be exploited by an uncooperative opponent; it minimises the strategic role of legitimate information retention (BATNA, reservation price); risk of naive use where "opening up" becomes a counterproductive injunction.
When to use this technique?
Particularly useful in relational and long-term negotiations (partnerships, key accounts, labour relations, family mediation), in the phases of trust-building and conflict resolution, and whenever misunderstandings or unspoken issues block progress. Less suited to purely distributive, one-off and adversarial transactions where information retention is a lever of value, and to contexts of strong asymmetry or proven bad faith.
Famous cases
Business · Unblocking a partnership by enlarging the open zone, A representative scenario (unattributed). Two companies are negotiating a distribution agreement that has been stalling for weeks, each suspecting the other of withholding. The lead negotiator deliberately opens his window: he discloses his management's real constraint (a quarterly financial deadline) and explicitly asks his counterpart what, in the proposal, makes them wary. The feedback reveals an unexpressed fear about territorial exclusivity, a blind zone for the first party. By dealing with this hidden point, both parties reduce the façade and conclude in three days what had been blocked for a month.
Everyday life · Breaking out of the unspoken in an inheritance division, A representative scenario (unattributed). Three heirs are deadlocked over the division of a family house. A mediator applies the Johari logic: he invites each of them to name what they dare not say (hidden zone: one wants to keep the house for emotional reasons he was concealing) and to hear the effect of their positions on the others (blind zone: his firmness was perceived as greed). By making these elements visible in the open zone, the group moves from a confrontation over figures to an agreement that takes into account each person's real attachments.
Common mistakes
Confusing openness with total transparency: disclosing your BATNA or your reservation price out of excessive goodwill destroys your bargaining power.
Soliciting feedback without really listening, turning the exercise into a sham that increases distrust instead of reducing it.
Opening up unilaterally in the hope of reciprocity: without a response from the other, you expose yourself without building mutual trust.
Ignoring pace and cultural context: imposing rapid disclosure in an implicit-communication culture is perceived as intrusive.
Treating the model as a manipulation tactic (feigning openness): the gap between discourse and behaviour is quickly detected and ruins the relationship.
How to recognise and counter this technique
Recognising it: the other multiplies "spontaneous" disclosures and insistent requests for feedback to prompt you to reveal more than is wise, the displayed openness may be an information trap. Defending yourself: distinguish relational openness (welcome) from the extraction of strategic information (to be filtered); practise graduated reciprocity (open up only to the extent that the other genuinely opens up); consciously keep in the hidden zone the elements that constitute your leverage (alternatives, constraints, thresholds); respond to feedback with acknowledgements without conceding sensitive information; check the consistency between the other's words of openness and their actions.
Limits and ethics
Limits: the model is a heuristic framework, not a measurable or predictive method; it was designed for personal development and group dynamics, its transposition to distributive negotiation is partial; it presupposes a minimum of good faith and psychological safety. Ethics: openness must remain authentic, instrumentalising disclosure to manipulate (false vulnerability, biased feedback) betrays the spirit of the model and constitutes relational deception. Conversely, one is not obliged to reveal everything: the loyal retention of strategic information (without active lying) remains legitimate. The right balance between transparency and protection of one's interests is the user's responsibility.
Variants and related techniques
Related techniques and frameworks: 360° feedback (an applied extension of the feedback lever); active listening and reformulation (tools of disclosure/feedback); the inverted Johari window or "Nohari" (focused on flaws); trust models such as Maister's trust equation; Fisher and Ury's "interests vs positions" approach (Harvard, Getting to Yes), which also aims to reveal what is hidden; social penetration theory (Altman and Taylor) on progressive self-disclosure; the communication contract and rapport techniques (NLP) on relational calibration.
To go further
Joseph Luft, "Of Human Interaction: The Johari Model" (Palo Alto, National Press Books, 1969), the reference account by the author.
Joseph Luft, "Group Processes: An Introduction to Group Dynamics" (Mayfield Publishing, 3rd ed. 1984), the original group-dynamics framework.
The "Johari window" article on Wikipedia and the summary sheet on Mindtools, accessible educational presentations of the model and its applications.
Roger Fisher & William Ury, "Getting to Yes" (Penguin, 1981), a complement on revealing interests in negotiation.
Scientific foundations
Joseph Luft & Harrington Ingham (1955) The Johari Window, a graphic model of interpersonal awareness Proceedings of the Western Training Laboratory in Group Development, Los Angeles, University of California (UCLA)
Joseph Luft (1969) Of Human Interaction: The Johari Model Palo Alto, CA: National Press Books
Joseph Luft (1984) Group Processes: An Introduction to Group Dynamics (3rd ed.) Mountain View, CA: Mayfield Publishing Company
Quick exercise
Test yourself before answering
Answer in your head, then reveal the solution. Memory is built through active recall.
1Quels signaux doivent vous alerter ?
A sudden imbalance in the exchange
Pressure to decide quickly
An argument you cannot verify
2Quelles parades appliquer ?
Slow down and reformulate
Ask for facts and sources
Concede nothing without a counterpart
Frequently asked questions
The questions we get most
What is the "The Johari Window" technique?
The Johari Window is a model of interpersonal awareness that sorts what is known to oneself and to others into four zones: open, blind, hidden and unknown. In negotiation, it serves as a relational compass: trust is built by enlarging the open zone through two levers, self-disclosure (sharing information about oneself) and soliciting feedback (agreeing to receive it). Shrinking the blind and hidden zones reduces misunderstandings, reveals real interests and smooths the exchange. It is less a pressure tactic than a framework for consciously steering the degree of openness according to the climate and the stakes.
Is the "The Johari Window" technique ethical?
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.
How do you defend against "The Johari Window"?
Reacting emotionally instead of coming back to the facts. The right reflex: slow down and reformulate.
What is the "The Johari Window" technique based on?
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
Three ready-to-use prompts
Copy, paste into your assistant, replace the [brackets]. Works with ChatGPT, Claude, Gemini, Mistral, Perplexity.
Prepare
Build your plan before the meeting
You are an expert negotiation coach. Help me prepare to use the "The Johari Window" 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.
Play the role of my counterpart in a negotiation. I am going to test the "The Johari Window" technique. React realistically and with resistance, do not give in too quickly, then at the end analyse my performance and suggest 3 concrete improvements.
Here is how my negotiation went: [paste the exchanges]. Analyse whether the "The Johari Window" technique was used well, what worked, the mistakes made, and spell out precisely what I could have done better.
Founding works of the 🧩 Models & personality profiles school this technique belongs to.
Emotions of Normal People (origine du DISC)
Book
W. M. Marston · 1928
Revised NEO Personality Inventory (Big Five)
Ouvrage de référence
P. Costa & R. McCrae · 1992
Thomas-Kilmann Conflict Mode Instrument
Outil
K. Thomas & R. Kilmann · 1974
The Process Communication Model
Ouvrage
T. 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).
The author
Author
On video
See the technique in action
Videos to picture The Johari Window and anchor it through examples.
The Johari Window is a model of interpersonal awareness that sorts what is known to oneself and to others into four zones: open, blind, hidden and unknown. In negotiation, it serves as a relational compass: trust is built by enlarging the open zone through two levers, self-disclosure (sharing information about oneself) and soliciting feedback (agreeing to receive it). Shrinking the blind and hidden zones reduces misunderstandings, reveals real interests and smooths the exchange. It is less a pressure tactic than a framework for consciously steering the degree of openness according to the climate and the stakes.
The right reflex
Name the manoeuvre: said out loud, a technique loses most of its power.
Never do this
Reacting emotionally instead of coming back to the facts.
6.7/10 tactical potential Low vigilance Documented school
Master this technique in real situations?
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