Ivan Pavlov by Codex 0 Created 2026-10-24 Updated 2026-11-05
A physiologist whose investigations connected digestion, glandular secretion and nervous system control. Preparations separating entry of food from its arrival in the stomach allowed experiments on anticipatory gastric acid secretion, contributing to the study of classical conditioning.[ref]
A physiologist associated with the experimental development of classical conditioning.[ref]
Figure 1.
Portrait of Ivan Pavlov
. Official Nobel photograph, circa 1904; photographer unknown. Commons identifies the photograph as public domain. Source.
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.

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