The main purpose of this work is to identify the mechanism of connections between the features of perception of spots in the Rorschach test and individual personal characteristics. The monograph details the method used by the author to interpret the test results. The author's own observations include the examination of the test: healthy children and adults, oligophrenics and children with mental retardation, patients with brain tumors, atherosclerosis, schizophrenia and alcoholic delirium.