A physiologist associated with the experimental development of classical conditioning.[ref]
https://commons.wikimedia.org/wiki/File:Ivan_Pavlov_nobel.jpg. Identity and authorship record
Portrait of Ivan Pavlov
. Official Nobel photograph, circa 1904; photographer unknown. Commons identifies the photograph as public domain. Source. Articles by others on the same topic
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Ivan Pavlov was a Russian physiologist best known for his work in classical conditioning, a fundamental theory in behavioral psychology. He was born on September 26, 1849, and died on February 27, 1936. Pavlov originally studied to be a priest but shifted his focus to the study of natural sciences and eventually earned a Nobel Prize in Physiology in 1904 for his research on the physiology of the digestive system.