, and motivation known to others but not to self. Hidden (Facade) The hidden quadrant refers to behavior, feelings, and motivation known to self but not to others. Unknown (Unknown) The unknown quadrant refers to behavior, feelings, and motivation known neither to self nor to others. Therapy [ edit ] One therapeutic target may be the expansion of the Open (Arena) square at the expense of both the Unknown square and the Blind (Blind Spot) square, resulting in greater knowledge of oneself, while voluntary dis