[Interaction of external and internal factors in the manifestations and formation of psychopathies and pathological personality development]. / Nekotorye voprosy vzaimodeistviia vneshnikh i vnutrennikh faktorov v proiavlenii i formirovanii psikhopatii i patologicheskogo razvitiia lichnosti

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.

[The type of higher nervous activity in twins]. / Nekotorye dannye issledovaniia tipa vysshei nervnoi deiatel'nosti u bliznetsov

Exmination of twelve pairs of monozygote (MT) and dizygote (DT) twins and their control groups revealed an identity of the higher nervous activity type and a high positive intrapair and group correlation of typological parameters in MT (0.42); a predominantly different typological classification and a lower correlation in DT (0.33); a low correlation in the control group No. 1 and mere traces of general positive correlation in group No. 2 (0.07) and No. 3. The data point to the considerable genetic dependence of the higher nervous activity type; they also serve as a verification of the method used.