ivan pavlow was a great Russian sscientist. Pavlov's teaching showed ccientists that  they   should rely on observation. palov belived that even the most complex behavior of animals is based on reflex acton. Pavlow has been the first to study artificially induced neurosis in animals. In some experements, his dogs were forsed to try and tell the difference between circles and ellipses.

если честно то перевод мне леееень писать, а так бы я написала. Ты уж извини :)