[Interaction of external and internal factors in the manifestations and formation of psychopathies and pathological personality development].

The authors substantiate the concept that the material and pathophysiological substrate of psychopathy is the pathological variant of the highest nervous activity type, on the basis of which psychopathy appears and begins to form. They attempt to answer some questions concerning the correlation between exogenous and endogenous origins of psychopathy. A delineation between psychopathy and normal variants on the one hand and accentuated personalities and pathocharacterological personality development on the other one is made.