“…Many instruments have been developed, such as the Pfister's Colour Pyramid test (1950) (Schaie, 1963); the Rorschach Inkblot test (1927) (Klopfer & Davidson, 1962), the Lüscher Colour test (1948) (Lüscher, 1969), the Lowenfeld Mosaic test (Lowenfeld, 1952); and different tests used regionally, for instance the Frieling Test (Muths, 2001), the Weyssenhoff test (Weyssenhoff, 1991) or, recently developed the Manchester Colour Wheel (Carruthers, Morris, Tarrier, Whorwell, 2010). They have been designed mostly to interpret the human psyche, for instance personality.…”