Noam Chomsky

Definition:

Noam Chomsky is an American linguist, philosopher, and cognitive scientist widely regarded as the founder of modern generative linguistics. His most influential contribution to language science is the theory of generative grammar — the proposal that human knowledge of language is not learned through experience alone but reflects an innate, species-specific faculty for language built into the human mind. Chomsky’s work transformed linguistics from a behaviorist discipline focused on verbal behavior into a mentalist cognitive science focused on the internal grammar that every human innately possesses. His theoretical framework directly shaped the nativist tradition in second language acquisition and remains the central reference point for debates about universal properties of human language.

Full name: Avram Noam Chomsky

Born: December 7, 1928, Philadelphia, Pennsylvania, USA

Institution: Massachusetts Institute of Technology (1955–2017, Emeritus); University of Arizona (2017–present)

In-Depth Explanation

Generative grammar and the language faculty.

Chomsky’s core claim is that humans possess a dedicated mental/neural system for language — the language faculty — that is distinct from general intelligence, memory, or social cognition. This language faculty is:

Innate: present in the human genetic endowment, not learned from experience
Species-specific: unique to humans among all animals (or at minimum massively more developed)
Productive: generates the infinite set of grammatical sentences from a finite set of rules — this is the “generative” property of grammar

The language faculty contains an internal grammar that specifies what sequences of words are grammatical and what they mean. A speaker who has acquired a language (in Chomsky’s sense) has built this internal grammar — an abstract computational system that operates largely below conscious awareness.

The Poverty of the Stimulus argument.

Chomsky’s most influential argument for innateness is the Poverty of the Stimulus (PoS) argument. The argument runs:

Children learn their native language to native-level grammatical competence reliably, at roughly the same developmental pace, regardless of substantial variation in the quantity and quality of linguistic input they receive.
The linguistic data (the “stimulus”) available to children is insufficient to reliably induce the correct grammar from general learning alone — the data is impoverished relative to the richness of the grammar acquired.
Therefore, children must bring prior knowledge of linguistic structure to the task — this prior knowledge is the innate Universal Grammar.

The PoS argument, though influential, is contested by usage-based and emergentist researchers (including Nick Ellis) who argue that general statistical learning mechanisms and richer input than assumed can explain acquisition without invoking innateness.

Universal Grammar.

From the Poverty of the Stimulus argument, Chomsky inferred the existence of Universal Grammar (UG): a set of innate principles and parameters that constrain the possible structures of human languages. UG defines what can and cannot be a human language — it explains why all human languages share deep structural properties (phrase structure, recursion, displacement) while surface variation is limited to a set of parametric options (e.g., whether a language requires overt subjects).

For second language acquisition, UG raises the question of whether adult L2 learners retain access to UG — a major empirical debate in SLA since the 1980s.

The Acquisition-Learning Distinction (Krashen’s extension).

Chomsky’s innateness hypothesis was extended into SLA by Stephen Krashen, who proposed the Acquisition-Learning Distinction: subconscious acquisition (Chomsky-flavored, input-driven) vs. conscious learning (explicit, monitored). This remains one of the most influential (and contested) framework distinctions in language teaching.

Influence on SLA.

Chomsky’s own work is in theoretical linguistics and first language acquisition, not in SLA directly. He has expressed skepticism about whether formal language instruction plays a significant role in adult SLA (one view consistent with his theoretical framework). Nevertheless, his influence on SLA is enormous through:

The UG access debate in SLA (Bley-Vroman’s Fundamental Difference Hypothesis, Schwartz, Sprouse)
The theoretical backdrop to Krashen’s Monitor Model
The nativist tradition in child language acquisition research
The critical period debates (see Critical Period Hypothesis)

Transformational-generative grammar and later frameworks.

Chomsky’s theoretical framework has evolved through several major versions:

Syntactic Structures (1957): the original transformational grammar framework
Aspects of the Theory of Syntax (1965): the Standard Theory, distinguishing deep structure from surface structure
Government and Binding (1981): the Principles and Parameters framework, explicitly incorporating UG principles
Minimalist Program (1995–present): the current framework, seeking minimal computational principles that derive grammatical structures

Each revision has influenced how linguists and SLA researchers conceptualize the internal grammar and its implications for language teaching and learning.

Key Contributions

Generative grammar — innate, rule-governed language faculty
Universal Grammar — innate constraints on possible human language structures
Poverty of the Stimulus argument — empirical motivation for innateness
Principles and Parameters framework — parameterized UG for cross-linguistic variation
Critique of behaviorism — 1959 review of Skinner transformed the field from behaviorism to cognitivism

Selected Works

Chomsky, N. (1957). Syntactic Structures. The Hague: Mouton.
Chomsky, N. (1959). Review of Skinner’s Verbal Behavior. Language, 35, 26–58.
Chomsky, N. (1965). Aspects of the Theory of Syntax. Cambridge, MA: MIT Press.
Chomsky, N. (1981). Lectures on Government and Binding. Dordrecht: Foris.
Chomsky, N. (1995). The Minimalist Program. Cambridge, MA: MIT Press.

Criticisms

Chomsky’s Universal Grammar (UG) framework has attracted foundational criticism from multiple directions. Usage-based researchers — particularly Nick Ellis and Michael Tomasello — argue that the Poverty of the Stimulus argument overstates the inadequacy of input: statistical learning studies demonstrate that even infants track distributional patterns in speech with remarkable precision, potentially explaining acquisition without recourse to innate grammatical knowledge. Tomasello’s (2003) construction grammar account proposes that children build grammar bottom-up from frequent, concrete exemplars rather than top-down from abstract principles.

The UG access debate in SLA remains unresolved. Bley-Vroman’s (1990) Fundamental Difference Hypothesis argues that adults do not have access to UG and instead rely on general problem-solving abilities — explaining why adult SLA is typically less successful and more variable than child L1 acquisition. Schwartz and Sprouse counter that adults retain full UG access but face performance limitations (working memory, L1 transfer) that mask underlying competence. Neither position has been decisively confirmed empirically.

The critical period hypothesis, often associated with Chomsky’s nativist framework, has been softened by research showing that age effects on acquisition are gradient rather than absolute — Robert DeKeyser‘s reanalysis of Johnson and Newport’s data suggests that high-aptitude adult learners can achieve near-native grammaticality judgment scores, challenging the hard maturational constraint that UG predicts. More broadly, Chomsky’s relative disinterest in applied linguistics and language pedagogy has limited UG’s practical impact on language teaching, despite its enormous influence on theoretical linguistics.

Related Terms

Research

Chomsky, N. (1965). Aspects of the Theory of Syntax. MIT Press.
Summary: The foundational formalization of generative grammar, introducing competence/performance distinction and deep/surface structure. Establishes the theoretical framework that all subsequent Chomskian linguistics extends or revises.

Chomsky, N. (1981). Lectures on Government and Binding. Foris Publications.
Summary: Introduces the Principles and Parameters framework, arguing that Universal Grammar consists of invariant principles with language-specific parameter settings — the model that dominated SLA UG-access research through the 1990s.

Chomsky, N. (1995). The Minimalist Program. MIT Press.
Summary: The most recent major revision of Chomskian theory, reducing the computational apparatus to minimal operations (Merge, Agree). Shifts the theoretical landscape from Government and Binding’s complex rule systems toward economy-driven derivations.

White, L. (2003). Second Language Acquisition and Universal Grammar. Cambridge University Press.
Summary: The most comprehensive treatment of UG in SLA — reviews evidence for and against adult UG access, parameter resetting, and the role of L1 transfer within a generative framework. Essential for understanding how Chomsky’s theoretical linguistics connects to second language research.

Tomasello, M. (2003). Constructing a Language: A Usage-Based Theory of Language Acquisition. Harvard University Press.
Summary: The primary rival account to Chomskian nativism — presents detailed evidence that children construct grammar from input through domain-general cognitive mechanisms (pattern finding, analogy, categorization) without requiring innate grammatical knowledge.