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John B. Watson (1878–1958)

Watson founded behaviourism as a self-conscious movement. His 1913 manifesto declared that psychology should be a purely objective branch of natural science, studying observable behaviour rather than consciousness, and aiming at the prediction and control of behaviour. He built the programme on conditioning and a radical environmentalism — the claim that experience, not inheritance, makes us what we are — and carried it to wide influence before a scandal ended his academic career at its height.

John Broadus Watson (1878–1958) was born near Greenville, South Carolina, into a hard rural childhood with a strict religious mother and an absent father. He took his PhD at the University of Chicago in 1903, working on the learning and neurological maturation of rats within the functionalist Chicago school of John Dewey and James Rowland Angell — heir to the psychology of William James — though he grew impatient with its preoccupation with consciousness and would found behaviourism in reaction against it. Appointed to Johns Hopkins in 1908, he rose quickly — editor of Psychological Review, president of the American Psychological Association in 1915 — and by the early 1920s was the most prominent voice in American psychology. The movement he founded became the dominant school of American psychology for decades; its later development belongs to its other figures and to the field of behaviourism itself.

Founding behaviourism

Watson’s founding statement was the 1913 paper “Psychology as the Behaviorist Views It,” delivered to the American Psychological Association. Psychology, he argued, must become a purely objective, experimental branch of natural science whose goal is the prediction and control of behaviour; introspection and consciousness are not proper subjects of a science, which should study only what can be observed — stimulus and response. This was methodological behaviourism: a directive about what psychology may study. (It is distinct from the later radical behaviourism developed by B.F. Skinner, a broader position about how inner events relate to behaviour, which is not Watson’s and belongs with Skinner and the field.) His popular book Behaviorism (1924) carried the programme to a general audience.

Watson grounded the approach in classical conditioning, drawing on Ivan Pavlov’s work on the conditioned reflex. He took over Pavlov’s objective method and the conditioned reflex itself — but not Pavlov’s neurophysiology, the framework of “higher nervous activity” and cortical excitation and inhibition. Behaviourism kept the conditioning and the objective stance and set the brain physiology aside, a simplification that sharpened its claims while narrowing its scope.

His most quoted claim was a radical environmentalism. In Behaviorism he wrote that, given a dozen healthy infants and a free hand to raise them, he could train any one at random into “any type of specialist I might select — doctor, lawyer, artist, merchant-chief and, yes, even beggar-man and thief” — and immediately added the caveat that he was going beyond his evidence. Amplified in popular discussion without the caveat, the line became his signature: human nature is plastic, behaviour is shaped by conditioning rather than instinct or inheritance. In his later work he rejected instinct as an explanatory principle and treated thinking as subvocal speech — silent motor activity, in principle objectively observable.

The Little Albert experiment

In 1920, with his graduate student Rosalie Rayner, Watson carried out his most famous and most criticised study. Presenting a nine-month-old infant, “Albert B.,” with a white laboratory rat while striking a steel bar behind him, they conditioned the child to fear the rat after repeated pairings; the fear then generalised to other furry things — a rabbit, cotton wool, a fur coat. It was taken as the first rigorous demonstration that human emotional responses could be classically conditioned, carrying animal-learning research into human psychology, and it became a textbook fixture.

By present standards its ethics are serious: the fear was never reversed, the infant was removed from the study while still frightened, and there was no informed consent in any modern sense. (Mary Cover Jones would soon show, with another child, that such fears could be deconditioned — a step Watson never took, and an early ancestor of later behaviour therapy.) The child’s identity stayed unknown for decades and remains contested: a 2009 identification as Douglas Merritte, a child with hydrocephalus who died young, was later challenged in favour of William Albert Barger, and the question is unresolved.

The fall and the second career

Watson’s prominence sharpened the scandal that ended his academic life. In 1920 his affair with Rayner surfaced during his divorce, made headlines, and forced his resignation from Johns Hopkins in October that year — an academic exile at the peak of his influence. He married Rayner in 1921.

Unable to return to a university, he joined the J. Walter Thompson advertising agency, rose to vice-president, and became a pioneer of psychologically informed, emotion-based advertising, working on major brands of the day — an early marriage of psychology and marketing. In 1928 he published Psychological Care of Infant and Child, applying behaviourist principles to parenting: do not coddle, treat children with objective restraint rather than affection. The book was influential and later widely criticised for its emotional coldness, and Watson is reported to have come to regret its harshness. He retired from advertising in his sixties and died in 1958. Before his death he burned much of his personal correspondence and papers.

Influence and contested reputation

Watson achieved a genuine methodological revolution: he turned American psychology toward the objective, experimental study of behaviour, brought conditioning from animal learning into human psychology, and set prediction and control as its aims in place of the introspective analysis of consciousness. On that foundation behaviourism became the dominant American psychology until the cognitive revolution of the 1960s and 1970s — a development that belongs to the field and its later figures rather than to Watson’s own work. His radical environmentalism placed him at one pole of the nature–nurture debate, where he remains a reference point. He is also genuinely contested: for the ethics of Little Albert, for the overreach of his environmental claims beyond his evidence, and for the severity of his parenting advice. His standing today is respectful but cautious — founder of a movement, methodological reformer, and a figure of real limitation.

Key works

See also: Behaviourism · Pavlov · Skinner · Dewey · James