Performance & metrics · Updated October 2026
The Johari window is a simple two-by-two model of self-awareness: it sorts what is known about a person by whether they know it themselves and whether others know it. Trainers use it to explain why feedback matters and to structure 360-degree feedback debriefs and team workshops.
American psychologists Joseph Luft and Harrington Ingham introduced the model in 1955, in a paper presented through a group-development training programme at UCLA. The name is a blend of their first names, Joe and Harry.
| Pane | Known to self? | Known to others? | Workplace example |
|---|---|---|---|
| Open (arena) | Yes | Yes | A team lead who is openly good at client calls and knows it |
| Blind spot | No | Yes | The same lead interrupts juniors in reviews; everyone notices except her |
| Hidden (facade) | Yes | No | She privately finds budgeting stressful and avoids it |
| Unknown | No | No | A strength in training others that nobody has tested yet |
Two moves change the shape of the window. Feedback from others shrinks the blind spot. Disclosure, telling others something about yourself, shrinks the hidden pane. Both grow the open area, which is where working relationships are easiest. The unknown pane tends to shrink through new assignments and stretch roles.
A common workshop format: each person picks a handful of adjectives from a fixed list to describe themselves, colleagues pick from the same list for them, and the overlaps and gaps fill the four panes. It works best in small, established teams, and it needs a facilitator who keeps it about work behaviour. In hierarchical setups, juniors rarely tell a manager about a blind spot in a group session, so collect peer input anonymously or start with peer-level groups. The model also gives managers a plain way to frame regular one-on-ones: “what am I not seeing about how this lands?” is a blind-spot question.
Keep its limits in view. It is a teaching aid, not a validated assessment instrument, and nothing from a Johari exercise should feed a rating or an increment decision.
360 feedback is a data-collection process with many raters and a report. The Johari window is a way of interpreting that kind of input: the gap between self-ratings and others’ ratings in a 360 report is essentially the blind-spot pane.
No. Disclosure works when the team has enough psychological safety that information will not be used against the person. Forcing personal disclosure in a low-trust team usually backfires.
Yes. Blind-spot items from feedback make good, concrete goals for an individual development plan, as long as each is turned into an observable behaviour to practise.
For the routine that keeps the blind spot small between formal reviews, see continuous feedback.