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During the 1890s, Russian physiologist, Ivan Pavlov was researching salivation in dogs in response to being fed. What he discovered, however, changed the course of human psychology forever.
(Reupload - 20 May, 2018)
During the 1890s, Russian physiologist, Ivan Pavlov was researching salivation in dogs in response to being fed. What he discovered, however, changed the course of human psychology forever.
(Reupload - 20 May, 2018)