Systems theory approach
The systems approach is not something entirely new that has emerged only lately. This is a natural method for working with both theoretical and practical problems, which has been used for centuries.
Systems theory approach allows us to study properties, structure, and functions of objects by regarding them as systems, i.e. as integrated sets of elements together with the whole of relations and connections between them.
The meaning of the systems approach as applied to the study of man consists in understanding and constructive application of the well known idea that a person as an element of nature, is similar to any other living entity, and many if not all of the findings and achievements, tools and methodology of the natural sciences that has long been successfully used by mathematicians and systemologists are applicable to the study of man as well.