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Coherence and Cohesion: Paragraphs That Score in IELTS Writing

IELTS Writing29 August 2026 · 7 min read · WiderAI Team

Coherence and Cohesion is the IELTS Writing criterion that judges whether your writing is easy to follow: coherence is the logical order of your ideas, and cohesion is the visible stitching — paragraphs, linking words, referencing — that holds them together. It is worth a quarter of your writing score, and it is widely misunderstood, because most candidates try to raise it by adding more linking words when examiners actually reward writers who need fewer.

Here is the principle that separates Band 6 from Band 7 on this criterion: at Band 6, cohesion is visible and sometimes mechanical — every sentence seems to start with "Furthermore" or "Moreover", and the connectors are doing work the ideas should do. At Band 7 and above, the writing flows because the ideas are in the right order and each paragraph has one clear job; the linking devices are varied, quieter, and often invisible. If a paragraph only makes sense because of its connectors, the paragraph is broken underneath.

So the fastest route to a better score is not a longer list of transition phrases. It is planning paragraphs properly, putting one central idea in each, and learning the referencing tricks — this, such, these problems, doing so — that professional writers use instead of heavyweight connectors.

What are examiners actually looking for?

Three things, roughly in order of importance. First, logical progression: does each sentence follow naturally from the one before, and each paragraph from the previous one, so the argument moves forward without jumps or loops? Second, paragraphing: is the essay divided into paragraphs, and does each one organise itself around a single central topic? Third, cohesive devices: are linkers, pronouns and substitution used flexibly and accurately — enough to guide the reader, not so many that they clutter the page?

Notice that paragraphing alone can cap a score. An essay written as one solid block, or broken into a new paragraph every sentence or two, signals that the writer cannot organise ideas into units — and no quantity of "on the other hand" repairs that. Four to five paragraphs is the natural shape for a Task 2 essay: introduction, two or three body paragraphs, conclusion.

How should a body paragraph be built?

A paragraph that scores well has an architecture the examiner can feel. It opens with a topic sentence announcing the central idea. The middle sentences develop that idea — explaining, exemplifying, drawing consequences — and every one of them belongs to the topic sentence. Nothing else moves in. When a new idea arrives, a new paragraph starts.

The most common structural failure is the drifting paragraph: it opens about the costs of urban traffic, wanders into pollution, and ends on public health funding. Each sentence connects to its neighbour, but the paragraph as a whole is about nothing in particular. Drift is invisible while you write and obvious when you read back, which is why a one-line plan before writing — one phrase per paragraph — prevents more cohesion problems than any linking-word list.

Order matters inside the paragraph too. General before specific, claim before example, cause before effect. If a sentence would surprise a reader who has only read the sentences before it, it is in the wrong place.

Why does stacking linking words lower your score?

Because the descriptors explicitly distinguish between using cohesive devices effectively and using them mechanically. A mechanical essay reads like this: "Furthermore, education is important. Moreover, it helps people get jobs. In addition, it benefits society. However, it is expensive." Every connector is grammatically correct; the effect is a shopping list wearing a suit. The examiner sees a writer decorating sentences rather than connecting ideas.

There are three specific habits to break:

• Starting every sentence with a connector. Natural English puts most links inside sentences ("Education is expensive, which is why…") or leaves them implicit when the logic is obvious.
• Using heavyweight academic connectors for lightweight jobs. "Notwithstanding the aforementioned" where "even so" would do marks you as memorising, not writing.
• Using connectors inaccurately — "on the contrary" to mean "on the other hand", "as a result" where nothing resulted. A wrong linker is worse than none, because it actively misdirects the reader.

The fix is a small kit used precisely: one or two ways to add (also, in addition), contrast (however, whereas), give cause (because, as a result), concede (although, even so) and conclude (overall). Ten devices used correctly outperform thirty used decoratively.

The quiet cohesion Band 7+ writers use

The devices examiners reward most are the ones candidates study least, because they do not look like "linking words" at all.

Referencing

Pronouns and demonstratives that point back: it, they, this, these, such. "Governments could subsidise public transport. This would make it a realistic alternative to driving." The "this" ties the sentences together with one syllable and zero clutter. Even stronger is the summary noun: "Such a policy would be expensive" — where "such a policy" gathers the whole previous sentence into a phrase and moves on. Common summary nouns worth owning: this approach, this trend, such measures, these problems, this shift.

Substitution and ellipsis

Replacing repeated words instead of repeating them: "Some cities have banned cars from their centres; others are considering doing so." One caution: every this and it must have an unmistakable referent. If "it" could point to two different things, the sentence damages coherence rather than helping it — vague referencing is a named weakness at Band 6.

Lexical chains

Repetition of an idea through related words rather than the same word: an essay about pollution that also says emissions, air quality, contaminants is stitched together by vocabulary itself. This is where cohesion and lexical resource shade into each other, and it is why well-planned essays feel cohesive even with few explicit connectors.

Cohesion is judged in speaking too — the fluency and coherence criterion rewards exactly the same natural linking, which you can see broken down in speaking band descriptors explained. And the same one-idea-per-answer discipline pays off in Part 3 of an IELTS speaking mock test, where rambling costs coherence marks just as drift does in essays.