["Search strategy" in solving verbal logic problems by schizophrenic patients].

In a solution of logical tasks of a deductive character by normals and patients with paranoid schizophrenia, the latter find solutions in less than half of the cases. They attract a great amount of questions, the character of which are more concrete with an accent on "weak" signs rather than general. The patients do not display adequate plans in solving such tasks, the search of the semantic field is narrow. Assumingly there is a disorder of the structure and ierarchy of information kept in the brain.