A population of schizophrenic patients was compared with a control group by means of the 8 color test. The schizophrenics showed a depressive factor in the preference for brown and the rejection of yellow. Interchange of gray and black suggests destructive tendencies and lack of orientation in the schizophrenic psyche. Shifts of primary colors are interpreted as signs of introversion caused by the disease. In the gray test, which gives pointers to the existential situation, healthy subjects, schizophrenics, addicts and depressives were compared with each other. While depressives and schizophrenics showed a disordered contact with the environment which is compensated by screening off the environment increasingly, the schizophrenic test sample showed destructive tendencies and signs of loss of a sense of distance in addition to the disordered contact with the environment.