The integration of humanitarian research has greatly expanded the range of related disciplines involved in the process of historical cognition. The article examines the epistemological aspects of interdisciplinaryism as the main principle of the development of modern history methodolo-gy. The consequence of strengthening inter-subject relationships in historical studies was the complexi-ty of vocabulary, the emergence of new concepts borrowed from related disciplines. The modern con-ceptual system is caused by the appearance of new objects of study, which were not in the “classical” historical science, so called “event history.” Some of them (gender, historical memory, totalitarianism, childhood, the environment, etc.) are established in their status of “historical” and interdisciplinary. At the same time, there appeared new objects of “non-event” history studies (history of emotions, vio-lence, etc.) which require an appeal to evolutionary psychology, historical sociology, anthropology and other areas of humanitarian knowledge.