The Johari Window is a communication model that can be used to improve understanding between individuals. In this Johari model, each person is represented by their own four-quadrant, or four-pane, window. Each of these contains and represents personal information - feelings, motivation - about the person, and shows whether the information is known or not known by themselves or other people.
This 4-step feedback model is useful when the purpose is to give a performer your assessment of a specific situation, event or task. The model can also be used if the purpose is corrective actions. However remember that all good feedback require a trustful relationship between the feedback receiver and the feedback giver and that feedback must alway be given with good intentions.