Ivan Pavlov Timeline

(1849–1936)

Ivan Pavlov (1849–1936) was a Russian physiologist best known for his pioneering research on classical conditioning. His experiments with dogs demonstrated how animals learn to associate stimuli, laying the foundation for behaviorism and profoundly influencing psychology and education. More Less

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Early Life and Education

Father Peter Dmitrievich Pavlov serves as village priest

1823 - 1899

Pavlov's father, Peter Dmitrievich Pavlov (1823–1899), was a village Russian Orthodox priest, a background that shaped the young Ivan's early upbringing in Ryazan.

Image source: Ivan Pavlov

Mother Varvara Ivanovna Uspenskaya raises family as homemaker

1826 - 1890

Pavlov's mother, Varvara Ivanovna Uspenskaya (1826–1890), was a homemaker who cared for the large family of ten children in Ryazan.

Birth of Ivan Pavlov in Ryazan, Russia

Sep 26, 1849

Ivan Pavlov was born on 26 September 1849 in Ryazan, Russia, the first of ten children. He would go on to become a Russian and Soviet experimental neurologist and physiologist known for his discovery of classical conditioning through his experiments with dogs.

Enrolls at University of Saint Petersburg

1870

In 1870, Pavlov enrolled in the physics and mathematics department at the University of Saint Petersburg to study natural science, beginning his formal scientific education.

Image source: Saint Petersburg State University

Receives degree of Candidate of Natural Sciences

1875

In 1875, Pavlov received the degree of Candidate of Natural Sciences, completing his initial course of study at the University of Saint Petersburg.

Graduates from Medical Military Academy with gold medal

1879

In 1879, Pavlov graduated from the Medical Military Academy with a gold medal for his research work, recognizing the excellence of his scientific investigations.

Image source: S. M. Kirov Military Medical Academy

Scientific Career

Joins Sergey Botkin's physiological laboratory

1878

In 1878, Professor Sergey Botkin, a clinician, invited Pavlov to work in the physiological laboratory as the clinic's chief, an important early step in his research career.

Image source: Sergey Botkin

Presents doctoral thesis on the centrifugal nerves of the heart

1883

In 1883, Pavlov presented his doctor's thesis on the subject of The centrifugal nerves of the heart, positing the idea of nerves and the basic principles of the trophic function of the nervous system.

Studies abroad from 1884 to 1886

1884 - 1886

Pavlov remained abroad for advanced scientific work from 1884 to 1886, further developing his expertise in physiology before returning to Russia.

Returns to Russia to seek a new position

1886

In 1886, Pavlov returned to Russia to look for a new position, seeking an institutional home for his growing physiological research program.

Appointed professor of Pharmacology at the Military Medical Academy

1890 - 1895

In 1890, Pavlov was appointed professor of Pharmacology at the Military Medical Academy and occupied the position for five years, until taking up the chair of physiology there in 1895.

Invited to the Institute of Experimental Medicine in St. Petersburg

1891

In 1891, Pavlov was invited to the Institute of Experimental Medicine in St. Petersburg, where he would establish and direct the Department of Physiology for decades.

Takes up chair of physiology at the Medical Military Academy

1895

In 1895, Pavlov took up the chair of physiology at the Medical Military Academy while continuing to direct the Department of Physiology at the Institute of Experimental Medicine.

Publishes The Work of the Digestive Glands

1897

After 12 years of research, Pavlov published The Work of the Digestive Glands in 1897, summarizing his experiments on digestion and the gastric function of dogs that earned him international acclaim.

Image source: Human digestive system

Develops concept of the conditioned reflex with Ivan Tolochinov

1901

The concept for which Pavlov is best known is the 'conditioned reflex', which he developed jointly with his assistant Ivan Tolochinov in 1901. Edwin B. Twitmyer at the University of Pennsylvania published similar research in 1902, a year before Pavlov published his.

Image source: Classical conditioning

Tolochinov presents results at Congress of Natural Sciences in Helsinki

1903

Tolochinov, whose own term for the phenomenon had been 'reflex at a distance', communicated the results at the Congress of Natural Sciences in Helsinki in 1903, spreading word of the conditioned reflex discovery.

Morgulis reports Allied blockade's effects on Russian scientists

1921

A 1921 article by Sergius Morgulis in the journal Science reported the effects of the Allied blockade on Russian scientists' access to scientific literature and resources, highlighting the difficult conditions facing Pavlov and colleagues.

Personal Life

Marries Seraphima Vasilievna Karchevskaya

May 1, 1881

Pavlov married Seraphima Vasilievna Karchevskaya on 1 May 1881. Sara, born in 1855, had met Pavlov in 1878 or 1879 when she went to St. Petersburg. In her later years she suffered from ill health and died in 1947.

Pavlov criticizes Communist social experiments

1923

In 1923, Pavlov stated that he would not sacrifice even the hind leg of a frog to the type of social experiment that the Communist regime was conducting in Russia, voicing his opposition to Soviet policies.

Writes letters to Molotov criticizing mass persecutions

1934

After the murder of Sergei Kirov in 1934, Pavlov wrote several letters to Vyacheslav Molotov criticizing the mass persecutions that followed, asking for reconsideration of cases pertaining to several people he knew personally.

Image source: Vyacheslav Molotov

Death of youngest son Vsevolod

1935

Their youngest son, Vsevolod, died of pancreatic cancer in 1935, only one year before his father's own death, a heavy personal blow to Pavlov.

Reads draft of the Stalin Constitution

1935

In 1935, a few months before his death, Pavlov read a draft of the 1936 'Stalin Constitution' and expressed his pleasure at the apparent dawn of a more free and democratic Soviet Union.

Image source: 1936 Constitution of the Soviet Union

Nobel Prize and Honors

Begins successive Nobel Prize nominations

1901 - 1904

Starting in 1901, Pavlov was nominated over four successive years for the Nobel Prize in Physiology or Medicine. He did not win until 1904 because earlier nominations were not specific to any single discovery but based on a variety of laboratory findings.

Awarded Nobel Prize in Physiology or Medicine

1904

Pavlov was awarded the Nobel Prize in Physiology or Medicine in 1904 for his significant research on the physiology of digestion, becoming the first Russian Nobel laureate.

Image source: Nobel Prize in Physiology or Medicine

Elected Foreign Member of the Royal Society

1907

In 1907, Pavlov was elected a Foreign Member of the Royal Society (ForMemRS). The same year he also became a foreign member of the Royal Netherlands Academy of Arts and Sciences.

Image source: Royal Society

Elected International Member of the US National Academy of Sciences

1908

In 1908, Pavlov was elected an International Member of the United States National Academy of Sciences, further cementing his international scientific reputation.

Image source: National Academy of Sciences

Awarded the Royal Society's Copley Medal

1915

In 1915, Pavlov was awarded the Royal Society's Copley Medal, one of the most prestigious awards in science, honoring his contributions to physiology.

Image source: Copley Medal

Elected International Member of the American Philosophical Society

1932

In 1932, Pavlov was elected an International Member of the American Philosophical Society, adding to his long list of international honors.

Image source: American Philosophical Society

Legacy

Founds the Pavlov Institute of Physiology

1925

The Pavlov Institute of Physiology of the Russian Academy of Sciences was founded by Pavlov in 1925 and named after him following his death, ensuring the continuation of his research tradition.

Pavlovian conditioning features in Brave New World

1932

Pavlovian conditioning is a major theme in Aldous Huxley's dystopian novel Brave New World (1932) and later in Thomas Pynchon's Gravity's Rainbow (1973), demonstrating the cultural reach of Pavlov's ideas.

Image source: Brave New World

Death of Ivan Pavlov

Feb 27, 1936

Pavlov died on 27 February 1936 of double pneumonia at the age of 86. His regular meetings, which lasted until his death, marked the end of a remarkable scientific career spanning more than half a century.

Ranked 24th most cited psychologist of the 20th century

2002

A survey in the Review of General Psychology, published in 2002, ranked Pavlov as the 24th most cited psychologist of the 20th century, reflecting his enduring influence on psychology.

Image source: Review of General Psychology

Ranked 24th most cited psychologist of the 20th century

Asteroid 1007 Pawlowia and lunar crater named after Pavlov