Noam Chomsky

Introduction

Avram Noam Chomsky (born December 7, 1928) is an American linguist, philosopher and cognitive scientist who argued that the capacity for language is an innate, biologically grounded faculty of the human mind. That claim reorganised linguistics in the second half of the twentieth century and helped end the dominance of behaviourism in psychology. Chomsky's starting observation was deceptively simple: children master the grammar of their language in a few years, on the basis of speech that is fragmentary, uncorrected and full of errors, and they do so in roughly the same sequence the world over. He took this gap between evidence and achievement — later called the poverty of the stimulus — as proof that a great deal of grammatical structure must be supplied in advance by the organism itself. His 1959 review of B. F. Skinner's Verbal Behavior became one of the founding documents of the cognitive revolution, and he is frequently described as the most cited living scholar of his era. A severe stroke in June 2023 ended his public and scholarly activity.

Early Life and Education

Chomsky was born in the East Oak Lane neighbourhood of Philadelphia to a family of Eastern European Jewish immigrants. His father, Ze'ev "William" Chomsky, had fled the Russian Empire in 1913 to escape conscription, worked in Baltimore sweatshops and Hebrew schools, and eventually became principal of the religious school at Congregation Mikveh Israel and a member of the Gratz College faculty, where he specialised in the history of the Hebrew language. His mother, Elsie Simonofsky, was born in what is now Belarus and worked as a teacher and activist. The household was saturated with Hebrew scholarship, Jewish textual tradition and radical politics; Chomsky later traced both his interest in language and his anarcho-syndicalist sympathies to it.

He entered the University of Pennsylvania in 1945 at the age of sixteen and stayed through to the doctorate, taking a BA in 1949, an MA in 1951 and a PhD in linguistics in 1955. The decisive intellectual influence was Zellig Harris, the leading American structuralist linguist, whose rigorous formal methods Chomsky absorbed even as he came to reject the anti-mentalism that accompanied them. Between 1951 and 1955 Chomsky held a Junior Fellowship in the Harvard Society of Fellows, and it was there that he wrote the dissertation Transformational Analysis, which supplied the technical apparatus for his first book. The dissertation's central ideas circulated privately for two decades as The Logical Structure of Linguistic Theory before appearing in print in 1975.

Academic and Professional Career

Chomsky joined the Massachusetts Institute of Technology in 1955, initially in a non-tenured post shared with a machine-translation project, and stayed for more than sixty years. He was made full professor in the Department of Modern Languages and Linguistics in 1961, held the Ferrari P. Ward Professorship from 1966 to 1976, and was appointed Institute Professor in 1976 — one of MIT's highest distinctions. He retired from active teaching at MIT and in 2017 took up a laureate professorship in linguistics at the University of Arizona, continuing to publish and to lecture on politics.

The 1950s and 1960s were his most consequential decade in psychology as well as linguistics. Syntactic Structures (1957) set out generative grammar as a formal system of rules capable of producing all and only the sentences of a language. In 1959 he published a long review of Skinner's Verbal Behavior in the journal Language, arguing that the concepts of stimulus, response, reinforcement and extinction could not reach the structural properties of sentences — that a speaker's ability to produce and understand an utterance never before encountered is not a matter of habit strength. The review was read across disciplinary boundaries as a licence to study internal mental structure again, and it is generally credited with helping open the way for cognitive psychology.

From the late 1960s Chomsky's public life divided. He became one of the most prominent critics of the Vietnam War — the 1967 essay "The Responsibility of Intellectuals" made his name outside academia — was arrested several times, and appeared on Nixon's enemies list. With Edward S. Herman he developed the propaganda model of mass media, published as Manufacturing Consent in 1988. Within linguistics his theoretical framework changed repeatedly: the extended standard theory of the late 1960s, government and binding theory in the 1980s, and the minimalist programme from the early 1990s onward. He also co-founded, with Marcel-Paul Schützenberger, the formal-language classification now called the Chomsky hierarchy, which became foundational in computer science.

Major Contributions to Psychology

Universal Grammar

Chomsky's central claim is that humans possess an innate set of constraints on what a possible human language can be. Universal grammar, on this account, is not a collection of rules for particular languages but a specification of the space within which all of them must fall — a biological endowment rather than a cultural invention. The argument from the poverty of the stimulus is its empirical anchor: because the speech children hear underdetermines the grammar they end up with, the missing information must be built in.

The Critique of Behaviorism

Chomsky's attack on behaviourist accounts of language was methodological as well as substantive. He argued that the extrapolations from animal conditioning to human verbal behaviour were unsupported even in principle, because the units of analysis were wrong: the relevant object is not the probability of a word given a reinforcement history but the rule-governed structure of the sentence. The review is often credited with breaking the behaviourist monopoly in American psychology, though historians note that the field was already moving, and that Chomsky's influence was as much in giving permission as in providing argument.

The Cognitive Revolution and the Modularity of Mind

By restoring internal representation as a legitimate object of study, Chomsky's work gave psychology a vocabulary for talking about mental structure that was not behaviourist and not introspective. It shaped psycholinguistics directly — the study of how sentences are parsed, how ambiguity is resolved, how language is lost in aphasia — and it fed, through collaborators such as George A. Miller and through the emerging field of cognitive neuroscience, into the broader cognitive science of the 1970s and 1980s.

Later Theoretical Work

From Lectures on Government and Binding (1981) to The Minimalist Program (1995), Chomsky progressively reduced the machinery of grammar, aiming to show that syntactic phenomena follow from a small set of principles interacting with the interfaces between language and the sensory and conceptual systems. The technical proposals remain contested inside linguistics, but they set the research agenda for a generation.

Major Publications

  • Syntactic Structures (1957) — the first statement of generative grammar and the critique of finite-state models of language
  • Review of Verbal Behavior, in Language 35 (1959) — the essay that helped turn psychology away from behaviourism
  • Aspects of the Theory of Syntax (1965) — the classic exposition of competence, performance and the innateness hypothesis
  • Cartesian Linguistics (1966) — a history of rationalist theories of mind, and a much-disputed attempt to give generative grammar a philosophical ancestry
  • Language and Mind (1968, revised 2006) — his most accessible statement of the biological approach to language
  • Reflections on Language (1975) — on the problem of how knowledge of language is acquired and used
  • Rules and Representations (1980) — the Woodbridge Lectures, arguing for a modular conception of mind
  • Manufacturing Consent (1988, with Edward S. Herman) — the propaganda model of mass media
  • The Minimalist Program (1995) — his mature syntactic framework

Impact and Legacy

Chomsky's effect on psychology was less a set of findings than a change in what could be said. Before him, the study of internal mental structure was professionally suspect in Anglophone psychology; after him, it was the default. Psycholinguistics, the computational study of grammar, and much of the architecture of modern cognitive science descend from problems he formulated. He was also the most prominent twentieth-century example of a scientist who was simultaneously a major political writer, and his example made that combination respectable in a way it had not been before.

The criticism is substantial and should not be minimised. Universal grammar has never been given an agreed formal specification, and its central empirical claim — that ordinary child-directed speech is insufficient for grammar learning — is disputed by researchers working in usage-based and connectionist traditions, notably Michael Tomasello and Elizabeth Bates, who hold that general-purpose statistical and social-cognitive abilities do the work Chomsky assigns to a dedicated module. Work by Jenny Saffran and others showing that infants track the statistical structure of speech streams from the first months of life is standardly cited against the innateness argument. Daniel Everett's description of Pirahã, reported in 2005 to lack the recursive embedding that Chomsky and his collaborators had called the unique core of human language, triggered a long and unresolved dispute. Within linguistics, Chomsky's later frameworks have been criticised as unfalsifiable, because they have been revised so often that no observation clearly refutes them.

The 1959 review has its own critical literature. Kenneth MacCorquodale's 1970 reply argued that Chomsky misrepresented Skinner's position, applying to Verbal Behavior standards it did not claim to meet and ignoring the experimental system behind it. More broadly, historians of psychology now treat the review as a turning point in retrospect rather than a decisive refutation at the time: behaviourism declined for many reasons, and radical behaviourism continues as a research programme.

Chomsky's political writing generated controversies that are inseparable from his scientific reputation. His defence of the free-speech rights of the Holocaust denier Robert Faurisson in the late 1970s — a defence he insisted was about principle, not content — damaged his standing, particularly in France. His political judgments have been attacked from the right and from the left, and critics have argued that the confidence he brought to questions of international politics was not matched by evidentiary standards comparable to those he demanded in linguistics. A responsible summary: Chomsky redirected the study of mind by insisting that the most ordinary human achievement — talking — required an explanation at the level of biology, and by refusing to accept that the observable was the only legitimate object of science. Whether the specific mechanism he proposed survives is still an open question.

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References

  • Chomsky, N. (1959). A review of B. F. Skinner's Verbal Behavior. Language, 35(1), 26-58.

Last updated: 2026-10-20

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