Language and Linguistics: Nature, Design, Competence and the History of the Field

This chapter opens Section XH3.1 of XH3 Linguistics, one of the six optional sections of the Humanities and Social Sciences (XH) paper, chosen at the time of application. It answers the heading "Language and Linguistics (Fundamental Concepts)": what language is in its spoken, written and signed forms; the difference between description and prescription; language, culture and identity, and linguistic determinism and relativity; language as an object of scientific study, its design features, the principles of creativity and productivity, and the levels of adequacy of grammars; the difference between competence and performance; and the major schools in the history of linguistics, European, American and the Indian grammatical tradition. The chapter teaches the concepts and the correct attributions rather than numerical work, so the questions test whether you can separate a descriptive claim from a prescriptive one, place a grammar at the right level of adequacy, and attribute an idea to the right thinker.

1. What language is: spoken, written and signed forms

Language is a systematic pairing of form and meaning that a community uses to communicate, and it is structured at several independent levels: sounds (or signs), words, sentences and meaning. For a linguist the primary medium is speech, because every normal community has a spoken (or, in Deaf communities, a signed) language that children acquire without instruction, whereas writing is a later, learned technology that many languages have never had. Writing therefore represents language; it is not language itself. Sign languages such as Indian Sign Language are full natural languages with their own grammar and are not manual codings of a spoken language — a point established by modern linguistics against the older prejudice that they were mere gesture.

  • Spoken language uses the vocal-auditory channel, is acquired naturally in early childhood, and is universal across human communities.
  • Signed language uses the manual-visual channel and is equally natural and fully grammatical; it arises spontaneously in Deaf communities and is acquired like any first language.
  • Written language is a secondary, invented representation, learned through schooling; its existence and form are historically and culturally contingent, not biological.
⚠️ Speech is primary, writing is derived
A very common exam trap treats writing as the "real" or "higher" form of language and speech as careless. Linguistically the order is reversed: speech (or sign) is primary and universal, writing is a derived technology. Treating the written standard as the true language is itself a prescriptive stance, not a scientific finding.

2. Description versus prescription

Linguistics is a descriptive science: it states how speakers actually use their language, without ranking usages as correct or corrupt. A prescriptive rule, by contrast, tells people how they ought to speak or write, usually enforcing the usage of a prestige group as the standard. "Many English speakers say who where traditional grammar expects whom" is a description; "You must always use whom as an object" is a prescription. Both have their place — prescription matters for editing, teaching a standard, and legal drafting — but the linguist's claims about the structure of a language are descriptive, and a form used systematically by a community is grammatical in that variety even if a style guide bans it.

Telling the two stances apart
Descriptive statementPrescriptive statement
Reports observed usage, is testable against dataIssues a norm, judges usage right or wrong
"In this dialect the double negative intensifies""Never use a double negative"
Grammaticality judged by native speakers' intuitionsCorrectness judged against a codified standard

3. Language as a science: units and design features

Treated scientifically, language is built from a small set of meaningless units (sounds) combined into meaningful ones (morphemes and words) and then into sentences, studied at the levels of phonetics/phonology, morphology, syntax, semantics and pragmatics. Charles Hockett set out a list of design features that characterise human language and let us compare it with animal communication. The most diagnostic are arbitrariness (the link between a sound and its meaning is conventional, not natural), duality of patterning (meaningless sounds combine into meaningful units — two layers of structure), displacement (we can talk about things not present in time or space), productivity/openness (new, never-heard messages can be made and understood) and cultural transmission (language is learned, not inherited genetically).

  • Arbitrariness: no resemblance between the word dog and the animal; onomatopoeia is a limited exception. This is Saussure's arbitrariness of the linguistic sign.
  • Duality of patterning (double articulation): a handful of meaningless phonemes recombine into tens of thousands of meaningful words — the source of the system's economy and power.
  • Displacement and prevarication: we can refer to the past, the future, the hypothetical and even lie — abilities animal signals generally lack.
🎯 Why productivity needs discreteness
Infinite expression from finite means works because units are discrete (a sound is this phoneme or that, not halfway) and recursive rules let structures nest inside structures. A continuous, graded signal cannot be recombined this way, which is why human language, not the bee's dance, is open-ended.

4. Creativity, productivity and the levels of adequacy of grammars

A grammar in linguistics is not a rulebook of dos and don'ts but a speaker's internalised system (and the linguist's model of it) that generates all and only the well-formed sentences of a language. Its creativity is the everyday fact that speakers routinely produce and understand sentences they have never encountered; this rests on productivity, the rule-governed openness of the system. Noam Chomsky ranked grammars by three levels of adequacy, each stricter than the last.

  • Observational adequacy: the grammar correctly lists the well-formed sentences of the data it was built on — it covers the corpus, but says nothing deeper.
  • Descriptive adequacy: it additionally captures the native speaker's intuitions — assigns the right structures, predicts ambiguity, and distinguishes grammatical from ungrammatical strings beyond the sample.
  • Explanatory adequacy: it does all that and is selected by a general theory that explains how a child could acquire exactly this grammar from limited data — the deepest level, tied to Universal Grammar.
⚠️ Order and inclusion of the levels
The levels are cumulative: every descriptively adequate grammar is observationally adequate, and every explanatorily adequate one is descriptively adequate, not the reverse. A frequent error swaps descriptive and explanatory, or treats a grammar that merely matches a corpus as descriptively adequate when it only reaches observational adequacy.

5. Competence versus performance; langue versus parole

Chomsky's distinction between competence and performance separates a speaker-hearer's tacit knowledge of their language — the internalised grammar — from its actual use in real time, which is shaped by memory limits, slips, hesitation, distraction and false starts. Linguistics in the Chomskyan programme aims at competence, because performance data, though observable, is cluttered by factors outside the language system. A speaker who stumbles mid-sentence has not lost competence; performance has merely failed to realise it cleanly.

This parallels, but is not identical to, Ferdinand de Saussure's earlier pair langue and parole. Langue is the shared, social system of a language held in common by a community; parole is the individual act of speaking. The key difference is emphasis: Saussure's langue is a social fact, a system of signs shared by a community, whereas Chomsky's competence is psychological, the knowledge in an individual mind. Saussure also drew the axes of synchronic (a language at one time) versus diachronic (its change over time) study, and defined the sign as the union of a signifier (signifiant) and a signified (signifié).

⚠️ Do not merge Saussure with Chomsky
Competence/performance and langue/parole line up roughly (knowledge versus use) but the attribution and the emphasis differ: langue/parole is Saussure and foregrounds the social system; competence/performance is Chomsky and foregrounds individual psychology and generative capacity. Keying the wrong name to the wrong pair is the standard error.

6. Language, culture, identity and linguistic relativity

Language carries a community's cultural heritage and is a primary marker of social and personal identity: the variety a person speaks signals region, group and stance, and choices of code can include or exclude. The Sapir–Whorf hypothesis concerns how far the language one speaks shapes thought. Its strong form, linguistic determinism, holds that language determines and limits thought — now widely rejected, since speakers can grasp distinctions their language does not grammaticalise. Its weak form, linguistic relativity, holds that language influences habitual thought and attention, and has some experimental support in domains such as colour categorisation, spatial frames of reference and grammatical gender.

ℹ️ Determinism versus relativity
Keep the two strengths apart: determinism (strong, language sets the limits of thought) is the discredited version; relativity (weak, language nudges habitual cognition) is the defensible one. An item that treats the strong claim as the established scientific consensus is testing exactly this confusion.

7. History of linguistics: European, American and the Indian grammatical tradition

Modern European structuralism begins with Ferdinand de Saussure, whose posthumous Cours de linguistique générale (1916) framed language as a system of relational signs and set the synchronic/diachronic and langue/parole distinctions. The Prague School (Roman Jakobson, Nikolai Trubetzkoy) built functional phonology and the notion of distinctive features and markedness; the Copenhagen School (Louis Hjelmslev) pursued abstract glossematics; and the London/Firthian tradition (J. R. Firth, later M. A. K. Halliday's systemic functional grammar) stressed meaning in context.

American structuralism grew from anthropological fieldwork on indigenous languages: Franz Boas, Edward Sapir, then Leonard Bloomfield, whose Language (1933) made a rigorous, distribution-based, behaviourist methodology dominant. The field was transformed again by Noam Chomsky's generative grammar (Syntactic Structures, 1957), which shifted the goal from cataloguing data to modelling the native speaker's mental competence and Universal Grammar.

The Indian grammatical tradition is far older and strikingly formal. Pāṇini's Aṣṭādhyāyī (roughly 5th–4th century BCE) describes Sanskrit through a compact, ordered system of rules (sūtras) with metarules, abbreviation symbols and context-sensitive operations — long admired as an anticipation of generative and formal grammar. Kātyāyana supplied the vārttikas (critical notes), and Patañjali's Mahābhāṣya is the great commentary on both. Bhartṛhari's Vākyapadīya developed the philosophy of language, including the sphoṭa theory of meaning-bearing linguistic unity. (The earlier Nirukta of Yāska dealt with etymology.)

ℹ️ Who did what — a quick key
Saussure: structuralism, sign, langue/parole, synchronic/diachronic. Jakobson/Trubetzkoy: Prague phonology and distinctive features. Bloomfield: American distributional structuralism. Chomsky: generative grammar, competence, Universal Grammar. Pāṇini: the Aṣṭādhyāyī, rule-based Sanskrit grammar; Patañjali: Mahābhāṣya; Bhartṛhari: Vākyapadīya and sphoṭa.

Key takeaways

  • Spoken and signed language are primary, natural and universal; writing is a derived, learned technology. Linguistics is descriptive (reports usage) not prescriptive (dictates a norm), and a systematically used form is grammatical in its variety.
  • Hockett's design features — arbitrariness, duality of patterning, displacement, productivity, cultural transmission, discreteness, prevarication — characterise human language; arbitrariness is Saussure's arbitrariness of the sign, and discreteness plus recursion underpin productivity.
  • Chomsky's levels of adequacy are cumulative: observational (covers the data), descriptive (also matches speakers' intuitions and structures), explanatory (also follows from a theory of acquisition / Universal Grammar).
  • Competence (tacit grammatical knowledge) versus performance (actual, error-prone use) is Chomsky's; langue (social system) versus parole (individual act), the sign as signifier+signified, and synchronic versus diachronic are Saussure's.
  • Linguistic determinism (strong Sapir–Whorf: language limits thought) is rejected; linguistic relativity (weak: language influences habitual cognition) is defensible with modest evidence. Language is also a central marker of cultural heritage and identity.
  • History: Saussure founds European structuralism; Prague School (Jakobson, Trubetzkoy) builds phonology; Bloomfield leads American distributional structuralism; Chomsky launches generative grammar. The Indian tradition — Pāṇini's Aṣṭādhyāyī, Patañjali's Mahābhāṣya, Bhartṛhari's Vākyapadīya — is far older and formally rigorous.

Practice questions (16)

Attempt each one before opening the answer. Every explanation names the tempting wrong option as well as the right one, because that is where marks are lost.

  1. Which statement best reflects the linguistic view of the relationship between speech and writing?

    1. Speech (or sign) is primary and acquired naturally, while writing is a later, learned technology that represents language
    2. Writing is the primary and most authentic form of language, while ordinary speech is merely a careless and degraded approximation of the written standard
    3. Speech and writing are two independent languages that happen to share much of their vocabulary
    4. Only languages that possess a writing system can be counted as full human languages
    Show answer

    Answer: A — Speech (or sign) is primary and acquired naturally, while writing is a later, learned technology that represents language

    Every normal community has a spoken or signed language acquired without instruction, while writing is a historically later, taught technology that many languages never had; writing therefore represents language rather than being it. The tempting distractor reverses this, treating the written standard as the 'real' language — a prescriptive attitude, not a linguistic finding.
  2. Consider the sentence: 'In casual speech many educated speakers end questions with a preposition, as in Who did you give it to?' This statement is best described as which kind of claim?

    1. Prescriptive, because it instructs speakers on the single correct way in which they ought to be constructing their questions
    2. Descriptive, because it reports an observed pattern of usage without judging it right or wrong
    3. Prescriptive, because it is correcting a grammatical error that occurs in formal writing
    4. Neither descriptive nor prescriptive, because it concerns written language only
    Show answer

    Answer: B — Descriptive, because it reports an observed pattern of usage without judging it right or wrong

    The sentence reports what speakers actually do ('many educated speakers end questions with a preposition') and passes no judgement, so it is descriptive. The prescriptive distractors add a 'correct way' or an 'error' that the sentence never states; a prescriptive claim would be 'you must not end a question with a preposition'.
  3. Which of the following is true of sign languages such as Indian Sign Language?

    1. They are manual re-codings of the surrounding spoken language and share its grammar exactly
    2. They are simplified systems of gesture that lack grammatical structure
    3. They are full natural languages with their own grammar, acquired like any first language
    4. They can express concrete objects but not abstract, hypothetical or displaced meanings
    Show answer

    Answer: C — They are full natural languages with their own grammar, acquired like any first language

    Modern linguistics established that sign languages are full natural languages with their own phonology, morphology and syntax, arising spontaneously in Deaf communities and acquired like any first language. They are not manual codings of a spoken language (the tempting distractor) and are not grammarless gesture; like all human languages they show displacement and productivity.
  4. Which of the following are design features of human language in Charles Hockett's sense? Select all that apply.

    1. Arbitrariness: the link between a form and its meaning is conventional, not natural
    2. Duality of patterning: meaningless units combine into meaningful ones at two layers of structure
    3. Displacement: the ability to refer to things remote in time or space, or not real at all
    4. Genetic inheritance of one's specific vocabulary, passed down biologically rather than learned
    Show answer

    Answer: A — Arbitrariness: the link between a form and its meaning is conventional, not natural; B — Duality of patterning: meaningless units combine into meaningful ones at two layers of structure; C — Displacement: the ability to refer to things remote in time or space, or not real at all

    Arbitrariness, duality of patterning and displacement are core Hockett design features. The option about genetic inheritance of vocabulary inverts the feature of cultural transmission: language, vocabulary included, is learned and not genetically inherited, so as stated it is not a design feature and is false.
  5. A learner notices that the word for 'dog' is completely different in Hindi, English and Tamil, with nothing in the sounds that points to the animal. This most directly illustrates which design feature?

    1. Displacement, since the speakers are able to talk about a dog that is distant from them in time or space, or not even present
    2. Duality of patterning, since each word is built from separate sounds
    3. Cultural transmission, since each child learns the word from its community
    4. Arbitrariness, since the link between the form and the meaning is conventional, not natural
    Show answer

    Answer: D — Arbitrariness, since the link between the form and the meaning is conventional, not natural

    Different, unrelated forms for the same meaning across languages, with nothing in the sounds resembling the referent, is the signature of arbitrariness — Saussure's arbitrariness of the sign. Cultural transmission is also true in general but is not what the sound-meaning mismatch demonstrates; the observation is specifically about the form-meaning link.
  6. Which statement correctly distinguishes duality of patterning from productivity?

    1. Duality of patterning is the two-layer organisation in which meaningless units combine into meaningful ones; productivity is the open-ended capacity to form and understand novel messages
    2. Duality of patterning is the capacity to produce and understand infinitely many entirely new sentences, while productivity is merely the layering of individual sounds into larger units of meaning
    3. The two terms name exactly the same property under labels from different schools of thought
    4. Duality of patterning refers to being bilingual, and productivity refers to the size of a speaker's vocabulary
    Show answer

    Answer: A — Duality of patterning is the two-layer organisation in which meaningless units combine into meaningful ones; productivity is the open-ended capacity to form and understand novel messages

    Duality (double articulation) is structural: a small set of meaningless phonemes recombine into a large set of meaningful words. Productivity (openness) is generative: speakers make and understand messages never heard before. The tempting distractor swaps the two definitions; bilingualism and vocabulary size are unrelated to either feature.
  7. A grammar reaches descriptive adequacy when it does what?

    1. It correctly lists only the sentences that happen to appear in the particular finite corpus it was originally built from, and nothing further
    2. It matches the data and also captures native speakers' intuitions, assigning the right structures and ambiguities
    3. It is selected by a general theory explaining how a child acquires exactly that grammar
    4. It is written entirely in formal mathematical notation
    Show answer

    Answer: B — It matches the data and also captures native speakers' intuitions, assigning the right structures and ambiguities

    Descriptive adequacy goes beyond merely covering the data (observational adequacy) to capturing the native speaker's intuitions — assigning correct structures, predicting ambiguity, and sorting grammatical from ungrammatical strings beyond the sample. Listing only the corpus is observational adequacy; being selected by an acquisition theory is explanatory adequacy; notation is irrelevant.
  8. Grammar G generates every sentence in its training corpus and no others, but it assigns a single structure to sentences that native speakers hear as ambiguous, and it cannot predict speakers' intuitions about new sentences. At best, G has reached which level?

    1. Explanatory adequacy
    2. Descriptive adequacy
    3. Observational adequacy
    4. No level of adequacy at all, since it misses some corpus sentences
    Show answer

    Answer: C — Observational adequacy

    G covers its corpus exactly, so it has observational adequacy. But because it fails to capture speakers' intuitions — missing ambiguity and not predicting judgements on new sentences — it does not reach descriptive adequacy, and so cannot reach explanatory adequacy either. The claim that G has no adequacy at all is wrong, because G does generate all and only the corpus sentences.
  9. Which statements about grammars and the goals of linguistics are correct? Select all that apply.

    1. Every explanatorily adequate grammar is also descriptively adequate
    2. Observational adequacy entails descriptive adequacy
    3. Explanatory adequacy is tied to explaining how a child could acquire the grammar, and to Universal Grammar
    4. A descriptively adequate grammar captures native-speaker intuitions, not just the corpus
    Show answer

    Answer: A — Every explanatorily adequate grammar is also descriptively adequate; C — Explanatory adequacy is tied to explaining how a child could acquire the grammar, and to Universal Grammar; D — A descriptively adequate grammar captures native-speaker intuitions, not just the corpus

    The levels are cumulative upward: explanatory implies descriptive implies observational. So an explanatorily adequate grammar is descriptively adequate, descriptive adequacy captures intuitions beyond the corpus, and explanatory adequacy concerns acquisition and Universal Grammar. The false option reverses the implication: observational adequacy is the weakest level and does not entail descriptive adequacy.
  10. The distinction between competence and performance, as Chomsky draws it, is the distinction between which two things?

    1. A speaker's regional dialect and wider social background, as opposed to the personal idiolect that they happen to use at home
    2. The written form of a language as opposed to its spoken form
    3. The lexicon of a language as opposed to its syntactic rules
    4. A speaker's internalised knowledge of the grammar as opposed to their actual, error-prone use of language
    Show answer

    Answer: D — A speaker's internalised knowledge of the grammar as opposed to their actual, error-prone use of language

    Competence is the tacit, internalised knowledge of the grammar; performance is its actual use in real time, shaped by memory limits, slips and hesitation. A speaker who stumbles has not lost competence — performance simply failed to realise it cleanly. Dialect/idiolect, writing/speech and lexicon/syntax are different distinctions altogether.
  11. Both Saussure's langue/parole and Chomsky's competence/performance oppose knowledge to use. A key difference between the two pairs is that:

    1. langue is a social system shared by a community, whereas competence is grammatical knowledge in an individual mind
    2. langue is a purely psychological and individual capacity, whereas competence is a shared social institution belonging to the whole community
    3. parole and performance both refer to writing, while langue and competence refer to speech
    4. there is no real difference, since the two pairs are exact synonyms coined independently
    Show answer

    Answer: A — langue is a social system shared by a community, whereas competence is grammatical knowledge in an individual mind

    Saussure's langue is a social fact — the sign system shared by a community — while Chomsky's competence is psychological, the knowledge in an individual mind. The option that calls langue psychological and competence a social institution reverses exactly this emphasis. The pairs run roughly parallel (knowledge versus use) but are not exact synonyms, and neither distinction is about writing versus speech.
  12. The hypothesis that the language one speaks shapes or influences habitual thought is most closely associated with which pair of scholars?

    1. Leonard Bloomfield and Franz Boas
    2. Pāṇini and Patañjali
    3. Edward Sapir and Benjamin Lee Whorf
    4. Roman Jakobson and Nikolai Trubetzkoy
    Show answer

    Answer: C — Edward Sapir and Benjamin Lee Whorf

    The idea that language shapes thought is the Sapir–Whorf hypothesis, named for Edward Sapir and his student Benjamin Lee Whorf. Boas and Bloomfield were American structuralists; Jakobson and Trubetzkoy founded Prague-School phonology; Pāṇini and Patañjali belong to the Sanskrit grammatical tradition.
  13. Regarding linguistic determinism and linguistic relativity, which statements are correct? Select all that apply.

    1. Strong linguistic determinism, that language determines and limits what can be thought, is now widely rejected
    2. Weak linguistic relativity, that language influences habitual thought and attention, has some experimental support
    3. The strong deterministic version is the current scientific consensus
    4. Relativity effects have been studied in areas such as colour categorisation and spatial frames of reference
    Show answer

    Answer: A — Strong linguistic determinism, that language determines and limits what can be thought, is now widely rejected; B — Weak linguistic relativity, that language influences habitual thought and attention, has some experimental support; D — Relativity effects have been studied in areas such as colour categorisation and spatial frames of reference

    The strong form (determinism) is discredited because speakers can grasp distinctions their language does not grammaticalise; the weak form (relativity) is defensible and has modest experimental support in domains like colour and spatial reference. The claim that strong determinism is the consensus is false — it is exactly the version linguists reject.
  14. Modern European structuralism, including the langue/parole and synchronic/diachronic distinctions, is founded on the work of which scholar?

    1. Leonard Bloomfield
    2. Noam Chomsky
    3. Roman Jakobson
    4. Ferdinand de Saussure
    Show answer

    Answer: D — Ferdinand de Saussure

    Saussure's posthumous Cours de linguistique générale (1916) framed language as a system of relational signs and set the langue/parole and synchronic/diachronic distinctions, founding European structuralism. Bloomfield led American structuralism, Chomsky founded generative grammar, and Jakobson belonged to the Prague School.
  15. Which of the following attributions in the history of linguistics are correct? Select all that apply.

    1. Leonard Bloomfield — American distributional structuralism
    2. Noam Chomsky — generative grammar and the competence / Universal Grammar programme
    3. The Prague School (Jakobson, Trubetzkoy) — functional phonology and distinctive features
    4. Ferdinand de Saussure — the Mahābhāṣya, the great commentary on Sanskrit grammar
    Show answer

    Answer: A — Leonard Bloomfield — American distributional structuralism; B — Noam Chomsky — generative grammar and the competence / Universal Grammar programme; C — The Prague School (Jakobson, Trubetzkoy) — functional phonology and distinctive features

    Bloomfield's distributional structuralism, Chomsky's generative programme, and the Prague School's functional phonology with distinctive features are all correctly attributed. The false pairing assigns the Mahābhāṣya to Saussure; the Mahābhāṣya is Patañjali's commentary in the Sanskrit grammatical tradition.
  16. Within the Indian grammatical tradition, which of the following attributions is correct?

    1. Pāṇini composed the Mahābhāṣya, which is the great and highly influential commentary on the grammar of the Sanskrit language written centuries after him
    2. Pāṇini's Aṣṭādhyāyī describes Sanskrit through ordered sūtras, while Bhartṛhari's Vākyapadīya develops the philosophy of language and the sphoṭa theory
    3. Bhartṛhari composed the Aṣṭādhyāyī, the rule-based grammar of Sanskrit
    4. Yāska's Vākyapadīya first introduced the sphoṭa theory of linguistic meaning
    Show answer

    Answer: B — Pāṇini's Aṣṭādhyāyī describes Sanskrit through ordered sūtras, while Bhartṛhari's Vākyapadīya develops the philosophy of language and the sphoṭa theory

    Pāṇini wrote the Aṣṭādhyāyī, the ordered sūtra-based grammar of Sanskrit; Bhartṛhari wrote the Vākyapadīya, which develops the sphoṭa theory. The Mahābhāṣya is Patañjali's commentary, not Pāṇini's, and the Nirukta (etymology) is Yāska's, not a Vākyapadīya — so the other options misattribute the works.