[Methodology of psychopathologic research at the present time]

The modern level in the development of psychological experiments in psychiatry is characterized by stages of the traditional problem of the representativeness of pathopsychological data and by new stages related to the development of the general theory of experiments (the planning and type of experiment, processing of data, classification and control of errors). That is why instead of a search of a one-to-one correlation between the data of pathopsychological experiments and nozological forms there enters into action not only a psychopathological, but a methodological analysis of complicated interrelations between the syndrome structure, the acquired knowledge and the structure of the process of investigation.