The purpose of the present study was to test context predictability of words in norm and schizophrenia and to reveal whether the context factor influences on discourse perception and comprehension. The hypothesis of a loss of context predictability in schizophrenic speech is upheld by the analysis of modified cloze test data. Two text types were used: a static text (descriptive sentences) and a dynamic text (sequence of events following swiftly on one another). The results showed that: 1) context predictability of words in the dynamic text is higher than in the static type text for both groups of subjects; 2) the schizophrenic patients have deficits in their ability to use the context factor in reconstructing both dynamic and static texts: syntax and semantic-syntactic relations were highly impaired, patients were not able to establish formal logical and causal connections; 3) filling the deleted text elements, patients used to create their own context rather than to reconstruct the original text; they couldn’t concentrate and suppress irrelevant associations; 4) reconstructing the text schizophrenic patients use mostly the right context of this text and don’t notice the left one.