The House-Tree-Person (HTP) is a classic projective drawing therapy/test, created by American psychologist John Buck in 1948. It later evolved into the Dynamic House-Tree-Person technique and is a commonly used tool in psychological counseling, self-exploration, and emotional healing. I. Core Definition and Principles - Essence: By having clients freely draw a house, a tree, and a person on paper, it bypasses rational defenses and projects subconscious emotions, relationship patterns, and personality states into the drawing. - Principles: - Projection Theory: Drawing is the language of the subconscious, unconsciously presenting unnoticed needs, conflicts, feelings of security, and defenses in lines, composition, and details. - Brain Functions: The left brain governs language and rationality; the right brain governs images, emotions, and intuition. Drawing activates the right brain, directly accessing deeper psychological levels. - Characteristics: No prior drawing experience is required; the quality of the drawing is not considered; only the symbolic meaning, layout, details, and process are appreciated.