Language, Thought and Communication — AQA GCSE Psychology Revision Notes

What you'll learn

• Two opposed views on whether thought shapes language or language shapes thought
• The evidence for and against the Sapir–Whorf hypothesis
• What separates human language from animal communication, including the bee dance
• The main forms of non-verbal communication and what each conveys
• Why some non-verbal signals appear innate while others are clearly learned
• The key studies — Carmichael, Von Frisch, Yuki — and what each demonstrates
• How to handle a nature–nurture question where the honest answer is "both, at different levels"

Key terms and definitions

Verbal communication — communication using words, spoken or written.

Non-verbal communication — communication without words, including expressions, gestures, posture and touch.

Paralinguistics — the vocal features accompanying speech, such as tone, volume, emphasis and pace.

Sapir–Whorf hypothesis — the view that the language a person speaks shapes how they think.

Linguistic relativism — the weaker version of that claim: language influences rather than determines thought.

Productivity — the property of a communication system whose elements can recombine into unlimited new messages.

Displacement — the property of referring to things not present, including the past and future.

Postural echo — unconsciously mirroring the body position of the person you are talking to.

Closed posture — arms folded and legs crossed, turned away; generally signals disengagement.

Open posture — limbs uncrossed and body angled towards the other person; signals engagement.

Personal space — the physical distance people maintain between themselves and others.

Neonate — a newborn infant, studied because behaviour present at birth cannot have been learned.

Evolutionary theory of non-verbal communication — Darwin's view that expressions are innate and had survival value.

Core concepts

Language and thought: two opposed views

Piaget argued that thought develops first and language expresses it. A child must understand a concept before acquiring the word for it, so cognitive development sets the limit on language.

The Sapir–Whorf hypothesis puts the arrow the other way: the language a person speaks shapes how they are able to think. In its strong form, language determines thought — you cannot think what your language cannot express. In its weaker form, often called linguistic relativism, language influences thought without limiting it absolutely.

Getting the direction right is the single most common source of lost marks in this topic. Piaget: thought → language. Sapir–Whorf: language → thought.

Evidence on language and thought

Carmichael and colleagues showed participants ambiguous drawings, each with a different label attached. When participants later reproduced the drawings from memory, the reproductions were distorted towards the label they had been given. The same drawing was recalled differently depending on the word supplied with it. This supports language influencing memory and thought — but note it supports the weak version, since nothing prevented participants from seeing the original figure.

Colour vocabulary is the other standard line of evidence. If speakers of a language with more terms for a particular colour range discriminate between those shades more readily, that suggests vocabulary influences perception or memory of colour. The crucial qualification is that speakers can still see distinctions they have no single word for. That observation is what defeats the strong version of the hypothesis.

So the evaluation lands in a clear place. The hypothesis draws attention to a genuine relationship, and the studies support an influence. But the strong claim that language determines thought is contradicted by people reasoning about distinctions their language does not name, and by the ability to learn a new concept and then invent a word for it. Only the weaker influence version survives.

Piaget's view has its own problem: it struggles with evidence that language can support and extend thinking rather than only expressing it, as Vygotsky argued, and it cannot easily explain how a child acquires concepts handed to them through words in the first place.

Human language and animal communication

Von Frisch established that honeybees convey specific information through dance. A round dance indicates food nearby; a waggle dance indicates food further away, with the angle of the dance conveying direction. This is genuine information transfer — not a trivial signal.

Yet it is not a language. It conveys a fixed set of information about food and cannot be recombined to express new ideas, discuss the past or the future, or comment on anything beyond the immediate situation.

Two properties mark the difference, and naming them is what earns marks:

Productivity — a finite set of elements recombines into an unlimited number of new messages. Humans routinely produce sentences never spoken before.

Displacement — reference to things not present: yesterday, next year, a hypothetical situation.

Animal systems convey a fixed repertoire tied to the here and now. The difference is therefore one of kind rather than only degree.

Evaluating Von Frisch's work: it was careful, systematic observation combined with experiment, and it provides the benchmark against which human language is defined. But the conclusions rest on interpreting behaviour whose meaning cannot be checked with the bees, later work suggests other cues such as scent also operate, and findings about insects say little about the origins of human language.

Forms of non-verbal communication

Facial expressions convey emotion, and a small set appears to be recognised widely across cultures.

Eye contact does several jobs at once: it regulates whose turn it is to speak, signals attention and interest, and can express attraction or aggression depending on its length. Breaking gaze often signals that a speaker has finished.

Body language includes postural echo — unconsciously mirroring the other person's position, which generally signals rapport and agreement — and the contrast between open and closed posture. Because postural echo happens below conscious awareness, it is a particularly useful cue to how an interaction is really going.

Touch can signal affection, comfort, dominance or status. What is acceptable depends on the relationship and the culture, and who may touch whom often reflects relative status.

Personal space varies with cultural norms, closeness of relationship, relative status and the sex of those involved. Standing too close causes discomfort; standing too far reads as coldness.

Paralinguistics — tone, volume, emphasis, pace — signal the speaker's attitude. Identical words can be read as sincere, sarcastic, angry or joking depending on delivery. Their absence is precisely why written messages are so often misread.

These combine in practice. A doctor who sits beside a patient rather than behind a desk, in an open forward-leaning posture, signals attention and equality rather than distance and authority — and the patient discloses more. Non-verbal cues shape an interaction before anything is said.

Innate or learned?

Darwin's evolutionary theory claims expressions and gestures are innate and survived because they had survival value for our ancestors.

The evidence for an innate basis:

• Cross-cultural similarity. If groups with no contact and no shared upbringing produce and recognise the same expressions, learning cannot easily account for it. The argument depends on those cultures genuinely being isolated.
• Neonate research. A behaviour present within hours of birth cannot plausibly have been learned, which makes such studies some of the strongest available evidence. Their limitations are that newborn behaviour is difficult to interpret and code reliably, some learning may occur before birth, and being innate at birth does not mean the behaviour stays unchanged by experience.
• Similar displays in other species.

The evidence for learning:

• Gestures differ between cultures. If a signal were innate it would carry the same meaning everywhere, so a gesture that is friendly in one country and offensive in another must have been acquired locally.
• Personal space norms differ systematically between cultures.
• Yuki and colleagues compared how Japanese and American participants interpreted emoticons and found the groups weighted different parts of the face — one attending more to the eyes, the other more to the mouth. Cultural learning therefore affects how expressions are read, not merely which ones are displayed.

The honest conclusion, and the one that earns top marks, is that non-verbal communication is layered. A small set of basic expressions appears inherited, while the rules governing when they may be displayed, how close people stand and what gestures mean are clearly acquired. Treating it as wholly one or the other misses that both operate on different aspects.

Why this matters practically

Non-verbal signals are read automatically and confidently. So a difference in acceptable conversational distance, in how much eye contact signals respect rather than challenge, or in what a gesture means, will be misinterpreted as rudeness or dishonesty rather than as a difference. This is why cross-cultural training addresses non-verbal norms and not only language.

Worked examples

Example 1: Getting the direction right

Explain the difference between Piaget's view and the Sapir–Whorf hypothesis. (3 marks)

Piaget argued that thought develops first and language then expresses it, so cognitive development limits language (1). The Sapir–Whorf hypothesis argues the reverse: the language a person speaks shapes how they are able to think (1). The two therefore place the causal relationship in opposite directions (1).

Example 2: Applying a study

Outline what Carmichael's study showed about language and thought. (3 marks)

Participants were shown ambiguous drawings accompanied by different labels (1). When later reproducing the drawings from memory, their versions were distorted towards the label they had been given (1). This suggests that language influenced what was remembered, supporting the weaker version of the Sapir–Whorf hypothesis (1).

The third mark is for identifying which version it supports — a detail that separates strong answers.

Example 3: Comparing communication systems

Explain one way human language differs from the bee dance. (3 marks)

Human language has productivity: a finite set of elements can recombine into an unlimited number of new messages (1). The bee dance conveys only a fixed set of information about the distance and direction of food (1). It cannot be recombined to express a new idea, so the difference is one of kind rather than degree (1).

Example 4: Handling nature versus nurture

"Non-verbal communication is innate." Discuss this claim. (9 marks)

Open with the evidence for: cross-cultural recognition of basic expressions, neonate research showing expressions before learning is possible, and similar displays in other species — consistent with Darwin's evolutionary theory.

Then the evidence against: gestures carrying opposite meanings in different countries, culturally specific personal space norms, and Yuki's finding that participants from different cultures weighted different facial features when judging emotion.

Then resolve rather than sit on the fence. Conclude that the claim is partly correct: a small set of basic expressions appears inherited, while display rules, gestures and spatial norms are learned. Treating non-verbal communication as a single thing is what makes the question look unanswerable.

An answer that lists both sides and stops earns fewer marks than one that explains why both are true of different aspects.

Common mistakes and how to avoid them

Reversing Piaget and Sapir–Whorf. Rehearse it as a pair before the exam.

Claiming Sapir–Whorf means people cannot see unnamed colours. That is the strong version, and the evidence contradicts it. Speakers can see distinctions they have no word for.

Saying the bee dance is a language. It is genuine communication that lacks productivity and displacement.

Saying animals "cannot communicate". They clearly do. The claim is about what their systems lack.

Treating all facial expressions as universal. Basic expressions may be; how they are interpreted and when they may be displayed are not.

Describing Yuki's study without its implication. The finding matters because it shows culture affects how expressions are read.

Picking one side of nature–nurture. The layered answer is the one the evidence supports.

Claiming non-verbal communication matters more than words. This is overstated from studies of short, emotionally loaded exchanges. No amount of non-verbal skill conveys a timetable or an argument. The two channels do different work.

Exam technique for Language, Thought and Communication

Specify which version of Sapir–Whorf you mean. Strong (determines) or weak (influences). Evaluation questions turn entirely on the distinction.

Name the properties, not just the difference. Productivity and displacement are the technical terms and they carry the marks.

Use studies as evidence for a position. Carmichael supports language influencing thought. Yuki supports cultural learning of interpretation. Von Frisch defines the animal–human boundary. State what each shows, not merely what happened.

For discussion questions, resolve the debate. The layered conclusion — some elements innate, others learned — is the position the evidence supports and reaching it is what accesses the top band.

Remember the isolation caveat. Cross-cultural evidence for innateness depends on the cultures genuinely having had no contact. Media exposure weakens the argument, and noting that shows evaluative awareness.

Watch for methods questions. Research on personal space is hard to conduct because measuring comfortable distance changes behaviour once participants know they are observed, and deliberately invading space raises ethical concerns. Much early work also drew on a narrow range of cultures while presenting results as general.

Quick revision summary

• Piaget: thought comes first, language expresses it. Sapir–Whorf: language shapes thought
• Strong Sapir–Whorf (language determines thought) is not supported; the weak influence version is
• Carmichael: labels distorted later reproductions of ambiguous drawings
• Colour vocabulary affects discrimination, but speakers still see unnamed distinctions
• Von Frisch: round dance for near food, waggle dance for distant, angle gives direction
• Human language has productivity and displacement; animal systems do not
• Non-verbal forms: facial expressions, eye contact, body language, touch, personal space, paralinguistics
• Postural echo signals rapport; closed posture signals disengagement
• Eye contact regulates turn-taking as well as signalling attention
• Paralinguistics change meaning without changing words — hence misread written messages
• Innate evidence: cross-cultural recognition, neonate studies, other species
• Learned evidence: culture-specific gestures, personal space norms, Yuki's emoticon study
• Best conclusion: non-verbal communication is layered — basic expressions innate, rules learned
• Cross-cultural misreadings register as rudeness rather than as difference