Coherence and Cohesion in IELTS Writing: The 25% Most Candidates Misunderstand

Coherence and Cohesion is a quarter of your IELTS Writing band and the criterion candidates misunderstand most productively wrong: they believe it is about linking words, so they add more, and the mark goes down. The criterion is actually about whether a reader can follow your argument without effort. Linking words are one small tool for that job, and the most visible way to fail it.

This guide unpacks what the criterion rewards and how to practice it. For the other three criteria, see the Task 2 guide.

Coherence is the plan; cohesion is the stitching

Coherence is the logical order of ideas: does each paragraph have one job, do the paragraphs answer the question in a sensible sequence, does the essay go somewhere? It is decided in your five minutes of planning, before any sentence exists.

Cohesion is how sentences attach to each other: reference words, linking phrases, repetition of key nouns, and the quiet logic of putting known information before new information. It is decided sentence by sentence as you write.

Examiners score both. An essay of beautifully linked sentences in a confused order fails on coherence; a well-ordered essay of disconnected sentences fails on cohesion. Most band 6 essays fail a little of both, in recognizable ways.

The paragraph rule that fixes most coherence problems

One paragraph, one central idea, announced in the first sentence and developed for the rest of the paragraph: explanation, then example, then implication. When a new idea arrives, a new paragraph starts. That is nearly the whole coherence game for Task 2.

The two habits that break it: the everything-paragraph, where three half-developed ideas share one block, and drift, where a paragraph about education costs ends up discussing teacher motivation. The plan prevents both: if you cannot write one sentence stating the paragraph's job, the paragraph is not ready to write. In Task 1, the same rule appears as grouping: each detail paragraph covers one group of the data, not a left-to-right tour.

Cohesion: referencing beats connecting

High-band cohesion is mostly invisible. Its main tool is referencing: "this approach", "such policies", "these figures", "the second group", pronouns and noun phrases that pick up the previous sentence and carry it forward. Reference words force logical continuity, because they only work when the sentences genuinely connect.

Linking adverbs ("however", "furthermore", "consequently") are the visible tool, and the descriptors explicitly penalize their mechanical overuse. The band 6 signature is a linker starting every sentence, doing no logical work. The test for any linker: delete it and reread. If nothing is lost, it was decoration; if the logic breaks, it was earning its place.

Three drills that move this criterion

1. The plan-only drill. Take five Task 2 questions and write only plans: position, one-line job for each paragraph. Ten minutes each. Coherence is trained faster by ten plans than by two full essays.
2. The linker audit. Take a finished essay and circle every connector. Delete the ones that survive the deletion test in reverse; replace two of them with reference phrases. Rewrite the paragraph.
3. The read-aloud order check. Read only the first sentences of your paragraphs, in order. They should sound like a compressed summary of the essay. If they do not, the problem is structural, and no linking word fixes structure.

Getting it scored

Coherence and Cohesion is hard to self-assess because you always understand your own essay. Feedback that scores each criterion separately shows you whether this specific 25 percent is the one dragging your Writing band, which changes what you practice next. A teacher can do this, and Verbola's writing feedback does it on every submitted draft, with sentence-level notes on organization (its band scores, like all AI scores including ours, are practice estimates, never official results). Two essays a week through that loop, inside a structured plan, is typically enough to hear the difference in your own writing within a month: fewer "moreovers", more argument.