Johari Window
Known Unknowns Vs. Unknown Unknowns
A framework for understanding self-awareness through a 2x2 matrix of what is known or unknown to oneself and to others, producing four quadrants: Open (known to all), Blind (seen by others but not oneself), Hidden (known to oneself but concealed), and Unknown (not yet recognized by anyone).
EverydayConcepts.io
Origin
Psychologists Joseph Luft and Harrington Ingham created this model in 1955 while researching group dynamics at UCLA, naming it "Johari" by combining their first names (Joe + Harry). Originally an adjective-sorting exercise rather than a diagram, it was first published in the Proceedings of the Western Training Laboratory in Group Development.
Updated February 22, 2026