[Features of thought formation in schizophrenic children].

The paper deals with problems related to the onthogenetic formation of a special type of the pathological cognitive activity. Such activity was expressed in disturbances of selective actualization of knowledge based on the past experience. Experimental psychological studies were performed in children from 5--14 years of age, with slowly progressive forms of schizophrenia. The data obtained indicate an acceleration (in comparison to normal children of the same age) in the development of thinking operations, demonstrate in a capability to generalize additive signs and relations. The results obtained also suggest that the capability to generalize subject properties hierarchied according to the degree of social priority, is formed by other regularities and is retarded in schizophrenic children in comparison to normal children of the same age.