The psychologist Lüscher (1969) uses the parameter active/passive in his well-known colour test. The active colours are then yellow and red, the passive blue and green. Passivity means rest and the general decline of metabolic processes and glandular function. Activity accelerates the metabolic process and gland function increases. Primitive peoples showed a number of basic behaviours. The active primitive man was a hunter, his activity was focused on conquest and obtaining. A passive behaviour was self-preservation, defence, withdrawal.
(Lüscher & Scott, 1969).