IELTS Academic Reading · Field Guide

The Cambridge Trap Atlas

Twenty-eight ways an IELTS Reading item is made hard, each one taken from a task Cambridge published itself. Cambridge writes the test; these are its habits.

6 families 28 patterns Evidence: Cambridge official sample tasks Compiled 4 September 2026
00

How to use this

A wrong answer in Reading is almost never a failure to understand English. It is a specific mechanism, deliberately placed, that a careful reader still walks into. Every pattern below is named, evidenced from a real Cambridge task, and paired with the counter-move.
Working method: sit a paper, then classify every mark you lost by code. Two or three codes will account for most of the loss. Those are what to drill — not more whole papers.
A

The answer is present, attached to the wrong thing

The largest family, and the one that decides the most marks. Nothing is invented: every figure in the wrong option is a real figure from the passage, moved.

A1

Quantity re-attached to another noun

A number is lifted from the passage and hung on a different thing. The number checks out, so the eye stops.

Cambridge's own item

The passage reports that about a fifth of American farmland was losing topsoil. The wrong option says productivity fell by twenty per cent. Same figure; one describes an area, the other an output.

Academic Reading sample — Multiple choice, Q10

What it looks like
You recognise the number, feel confirmed, and select.
Counter-move
Read the noun the number is attached to, in both the passage and the option, before anything else.
A2

Scope quietly widened or narrowed

A qualifying phrase is dropped, so a claim about part of something becomes a claim about all of it.

Cambridge's own item

The passage says smoking causes thirty per cent of deaths from cancer. The statement says thirty per cent of deaths in the United States. Answer: NO.

Academic Reading sample — Identifying writer's views, Q4

What it looks like
A sentence you are sure you just read.
Counter-move
Find the qualifier the passage attached and check the statement still carries it. Missing qualifier means NO or FALSE, not NOT GIVEN.
A3

Category swap inside a pair the passage keeps apart

Two things are discussed side by side — fertiliser and pesticide, quantity and frequency — and the option swaps them.

Cambridge's own item

One option says Danish farmers applied fertiliser far more often than in 1960. The passage gives a rise in frequency for pesticides and a rise in quantity for fertiliser. Both facts are real; the pairing is not.

Academic Reading sample — Multiple choice, Q11

What it looks like
Every word is in the paragraph somewhere.
Counter-move
When a paragraph runs two parallel series, mark which is which before reading the options.
A4

Right value, wrong condition

The passage gives two values under two conditions. The question names one condition; the more prominent value belongs to the other.

Cambridge's own item

A recall notice pays ten dollars for an unopened jar and five for an opened one. The question asks about an opened jar.

General Training Reading sample — Short-answer questions, Q6

What it looks like
You find a dollar figure and write it down.
Counter-move
Underline the condition in the question stem first. Completion questions are won in the stem, not in the passage.
A5

Wrong agent for the action

Two officials, two departments, two researchers — each responsible for a different action. The answer is whichever one matches the verb in the question.

Cambridge's own item

In the same recall notice, one manager hears from people who ate the product and a different manager handles reward information. The question asks which to contact after eating it.

General Training Reading sample — Short-answer questions, Q7

What it looks like
Two plausible job titles in one short text.
Counter-move
Match on the verb, not on the noun. Ask what each person is said to do.
A6

Direction of change reversed

Four things are listed in one paragraph. Three moved one way and one moved the other. The question asks for the odd one.

Cambridge's own item

After New Zealand ended farm subsidies, incomes fell, fertiliser use fell and over-stocking stopped — while farms began to diversify. The question asks what increased.

Academic Reading sample — Multiple choice, Q12

What it looks like
All four options are in the paragraph.
Counter-move
Put an arrow beside each item as you read the paragraph. Never answer a direction question from memory of the topic.
A7

Time relation reversed

One adverb decides the mark: later, before, after, then, already. Names and dates are all correct.

The mechanism

A man Cambridge describes as someone the employer hired later is offered in a statement as an employee at the time of the invention. Nothing else in the statement is wrong.

Pattern; used in our Paper 01, Q10, and Paper 02, Q28

What it looks like
A sentence that matches on every name and number.
Counter-move
In any statement carrying two events, establish the order before judging the content.
B

You are invited to join two true things

This family manufactures NOT GIVEN. Nothing is contradicted; two facts are placed near each other and the connecting relation is left for you to supply. Supply it and you lose the mark.

B1

Relation swap

Two entities are genuinely linked, but by a different relation from the one the statement asserts — published in, not funded by; supplied, not paid for; advised, not decided.

Cambridge's own item

A study appeared in a medical association's journal, and the association is described as a strong opponent of smoking. The statement says opponents of smoking financed the study. Answer: NOT GIVEN.

Academic Reading sample — Identifying writer's views, Q7

What it looks like
Both halves of the statement are in the text, close together.
Counter-move
Name the verb that actually joins them in the passage. If the passage's verb is not the statement's verb, it is NOT GIVEN.
B2

Adjacent proposition on the same subject

The statement is about the right people and the right topic, but asserts something the passage never took a position on.

Cambridge's own item

The passage discusses the health risk to the non-smoking partner in a marriage. The statement says that partner is likely to take up smoking. Answer: NOT GIVEN.

Academic Reading sample — Identifying writer's views, Q5

What it looks like
The topic sentence appears to be right there.
Counter-move
Say the passage's proposition aloud in your own words, then compare propositions — not topics.
B3

Superlative moved to another dimension

The passage claims a record on one measure — deepest, oldest, first — and the statement claims it on a neighbouring one.

The mechanism

A structure is described as having the deepest known shaft, and its length is given in the same sentence without any claim of a record. The statement calls it the longest.

Pattern; used in our Paper 02, Q9

What it looks like
A superlative and a measurement in one sentence.
Counter-move
Check which noun the superlative modifies. A figure given without a comparison is not a record.
B4

Cause supplied by the reader

Two events are joined by and, or simply by sequence. The statement joins them with because.

The mechanism

Surgeons objected, and outcomes improved. Whether the first caused the second is never discussed.

Mechanism — not currently set in either paper; watch for it in the real exam

What it looks like
An obvious causal story that fits the facts.
Counter-move
Treat because, so that, as a result in a statement as a claim needing its own evidence.
C

True, but at the wrong strength

The option says something the passage nearly says. The gap is one of degree, and degree is a claim.

C1

Overstatement

A hedged claim is returned without its hedge: may becomes does, often becomes always, some becomes all.

The mechanism

A passage says a large part of a cargo melted. The statement says none of it survived. The number is not given, so the reader cannot verify — but a large part and none are different claims, which makes it FALSE rather than NOT GIVEN.

Pattern; used in our Paper 01, Q7

What it looks like
The right idea, said with confidence.
Counter-move
Circle every absolute word in the statement — all, none, never, only, must — and hunt specifically for the passage's hedge.
C2

The extreme version the writer has already refused

An argumentative passage states a moderate thesis and explicitly rejects its strong form. The strong form is then offered as an option.

The mechanism

A writer argues that individuals are substitutable, then says plainly that they are not interchangeable. The option offers individuals contribute nothing.

Pattern; used in our Paper 01, Q40

What it looks like
A clean summary of the whole passage.
Counter-move
In a Passage 3 global question, the most extreme option is almost never right. Look for the concession paragraph; it exists to kill that option.
C3

A local fact generalised

The passage says something holds under one condition and something else under another. The option states one of them as universal.

The mechanism

A wide tree ring means a wet year on dry ground and a warm summer at the treeline. Both are offered as what a wide ring means.

Pattern; used in our Paper 02, Q25

What it looks like
A statement you can point to in the text.
Counter-move
Watch for on a dry site, in this case, where. A conditional clause is a fence around the claim.
D

True, but the answer to a different question

Cambridge builds distractors out of the passage rather than out of thin air. A wrong option is usually a correct statement that belongs somewhere else.

D1

Statement moved from another paragraph

The option is entirely accurate. It simply does not answer the question asked.

The mechanism

Asked why supermarkets avoid the single queue, an option offers that such a queue is slower for the individual — true, and stated two paragraphs earlier for a different purpose.

Pattern; used in our Paper 01, Q26

What it looks like
You verify it in the passage and feel safe.
Counter-move
Verifying an option is only half the check. Ask whether it answers this stem.
D2

An intermediate actor named beside the answer

In a first-invented or first-used question, the passage names a party who took the idea up, adopted it, or became interested — next to the party who actually originated it.

Cambridge's own item

Asked who first used rockets as weapons of war, the passage has Europe becoming seriously interested in the eighteenth century, while the impetus is credited to India. Answer: the Indians.

Academic Reading sample — Matching features, Q9

What it looks like
The nearest name to the phrase you searched for.
Counter-move
For origin questions, look for verbs of taking up — adopted, became interested, began to experiment. Those mark the decoy.
E

Surface matching betrays you

These patterns punish scanning. Each one makes the word you searched for lead somewhere other than the answer.

E1

Synonym substitution, with the keyword parked on a decoy

The question paraphrases the answer, so the passage's own keyword appears somewhere else — beside a wrong option.

The mechanism

A question converts a decade into ten years. Scanning for the passage's word finds nothing; the word appears only where it will mislead.

Pattern; used in our Paper 02, Q40

What it looks like
The keyword jumps off the page — in the wrong place.
Counter-move
Before scanning, write the two or three likely synonyms of the stem's key term. Search for meaning, not letters.
E2

The answer sits after its own distractor

In a sentence of the form from X to Y, the answer is Y and the eye takes X. The first figure in a sentence is usually the wrong one.

The mechanism

Costs fall from thirty cents to ten; losses fall from two thirds to under a third. In both cases the required figure is the second.

Pattern; used in our Paper 01, Q7 and Q8

What it looks like
A number appearing right where you expected one.
Counter-move
Read every completion sentence to its full stop before writing anything.
E3

Referent chains

The former, the latter, this, they, such species. The fact you need is two sentences from the name it belongs to.

Cambridge's own item

A passage on beetles describes two species, then continues with the former and the latter, and the table wants the generation counts sorted by species.

Academic Reading sample — Table completion, Q10–11

What it looks like
A clean sentence with the number you want in it.
Counter-move
Write the name over every pronoun before filling the table. Never carry a referent in your head.
E4

Minimal-pair options

Two or three options differ by a single phrase. The work is not identifying the topic but separating the twins.

Cambridge's own item

A heading list offers government policy in rich countries, in poor countries, and on food output. A word box for a diagram offers a species name and the same name with one word added.

Academic Reading samples — Matching headings, Q1–5; Diagram label completion, Q6–8

What it looks like
You match the topic and stop reading the list.
Counter-move
Read the whole option list first and bracket the twins. Then decide what separates them, and look for exactly that.
E5

The bridge sentence

A paragraph's last sentence hands its subject to the next paragraph. Read only the first and last lines and you take the following paragraph's heading.

The mechanism

A section on filling waiting time ends by raising memory; the section on memory follows. The heading about memory belongs to the second.

Pattern; used in our Paper 01, Q18

What it looks like
The last line seems to summarise.
Counter-move
Decide a paragraph's heading from its middle, then check that the first line agrees. Discount the last line entirely.
E6

The confirming sentence sits in the next paragraph

A paragraph's own claim is only named in the paragraph after it, which opens by summarising what came before.

Cambridge's own item

A section sets out a list of propositions; only the opening of the following section tells you those propositions concern the individual.

Pattern; used in our Paper 01, Q15

What it looks like
A paragraph that seems to lack a thesis.
Counter-move
Never finalise a heading until you have read the first sentence of the paragraph after it.
F

The mechanics of the task itself

Marks lost here have nothing to do with comprehension. They are lost to the rules of the format.

F1

Answers that do not run in order

Most tasks follow the passage top to bottom. Matching information, matching headings and matching features do not, and they permit repeats.

Cambridge's own item

A matching-information set runs C, F, E, H, A, D across eight paragraphs. A matching-features set uses the same letter twice, and the instruction says so.

Academic Reading samples — Identifying information, Q14–19; Matching features, Q7–10

What it looks like
You narrow the search using the previous answer.
Counter-move
Read the NB line. On these three tasks, treat every question as a fresh search of the whole passage.
F2

The word limit decides which words are the answer

A correct idea written in too many words scores zero. Articles and optional modifiers are usually tolerated; qualifying clauses are not part of the answer.

Cambridge's own item

Official keys record alternatives with slashes and mark some words optional in brackets — for instance a verb with or without its adverb, or a noun with or without its adjective.

Cambridge sample answer keys, Academic and General Training

What it looks like
A confident answer of four words under a three-word limit.
Counter-move
Count the words before writing. If you are over, the extra words are a qualifying clause, not the answer.
F3

Grammatical fit

The gap's syntax fixes the form of the answer: a verb tense, a plural, a comparative. Copying the passage's form blindly fails.

The mechanism

A gap requiring a bare verb, or a comparative adjective, only accepts the form the sentence needs.

Sentence and summary completion, all papers

What it looks like
A word you found in the right sentence.
Counter-move
Predict the part of speech of the gap before you look for it. Read the completed sentence back.
F4

Prose re-sorted into a table

A table's columns are attributes; the passage's sentences are not organised by attribute. You have to re-index as you read.

Cambridge's own item

A beetle table asks for climate, start of season and generations per year for three species, from prose that discusses each species in a different order and in a different sentence shape.

Academic Reading sample — Table completion, Q9–13

What it looks like
You fill a row and cannot find the next cell.
Counter-move
Fill the table by column, not by row: take one attribute and sweep the passage for it.
F5

Ordinal to position

A diagram wants a position; the passage supplies a comparison — shallowest, uppermost, innermost — rather than a measurement.

Cambridge's own item

Two species are placed on a depth scale by their stated depths in centimetres; a third is placed only by being called the shallowest.

Academic Reading sample — Diagram label completion, Q6–8

What it looks like
Two of three labels come easily and the third has no number.
Counter-move
Place the ones with figures first, then read the leftover label as a relation to them.
F6

A range, and only one end is wanted

The passage gives a span. The question asks for the maximum, the minimum, or the starting point.

Cambridge's own item

A reward is offered as a range between two sums; the question asks for the maximum.

General Training Reading sample — Short-answer questions, Q8

What it looks like
You write the first figure of the range.
Counter-move
Highlight maximum, minimum, at least, up to in the stem before searching.
G

Where each pattern lives

Which task types each pattern can appear in. Use this to predict what you are about to be attacked with.

CodePatternAppears in
A1Quantity re-attachedMCQ, T/F/NG, completion
A2Scope widened or narrowedT/F/NG, Y/N/NG
A3Category swapMCQ, table completion
A4Right value, wrong conditionShort answer, completion
A5Wrong agentShort answer, matching features
A6Direction reversedMCQ, T/F/NG
A7Time relation reversedT/F/NG, Y/N/NG, MCQ
B1Relation swapT/F/NG, Y/N/NG
B2Adjacent propositionT/F/NG, Y/N/NG
B3Superlative movedT/F/NG
B4Cause supplied by readerY/N/NG, MCQ
C1OverstatementT/F/NG, Y/N/NG, MCQ
C2Refused extreme versionMCQ (global), sentence endings
C3Local fact generalisedMCQ, T/F/NG
D1Moved from another paragraphMCQ, sentence endings
D2Intermediate actorMatching features, MCQ
E1Synonym substitutionevery type
E2Answer after its distractorall completion types
E3Referent chainsTable, summary, matching features
E4Minimal-pair optionsHeadings, features, endings, word boxes
E5Bridge sentenceMatching headings, matching information
E6Confirmation in the next paragraphMatching headings
F1Answers out of orderMatching info, headings, features
F2Word limitall completion types, short answer
F3Grammatical fitSentence and summary completion
F4Prose re-sorted into a tableTable and note completion
F5Ordinal to positionDiagram label completion
F6One end of a rangeShort answer, completion
H

The procedure in the room

  1. Read the instruction line, including the NB. It tells you the word limit and whether answers repeat or run out of order. Two marks a paper are lost here for nothing.
  2. Mark the stem before you search. Underline the condition, the superlative, the agent and any absolute word. Most of family A and family F are defeated at this step.
  3. Predict the answer's shape. Part of speech, and roughly how many words. If what you find does not fit the shape, you are in the wrong sentence.
  4. Search for meaning, never for letters. Write the likely synonyms first. The passage's own keyword is more often beside a distractor than beside the answer.
  5. Read the whole sentence to its full stop. The answer is regularly the second figure, after the one you wanted.
  6. For T/F/NG, name the passage's verb. If the statement's verb is different, it is NOT GIVEN. If the statement drops a qualifier the passage has, it is FALSE.
  7. For headings, judge from the middle of the paragraph, then check against the first line of the next one. Ignore the last line.
  8. Do not leave a blank. There is no penalty. An unanswered question is a mark given away.
  9. Bank time on Passage 1. Aim to finish it in under seventeen minutes; Passage 3 will want more than twenty.
  10. Afterwards, classify every loss by code. Not the total — the codes. Two or three of them will hold most of your missing marks.

Evidence base: the Academic Reading and General Training Reading sample tasks published by Cambridge, seven and eight tasks respectively, each with its official answer key. Patterns marked mechanism are ones we built into our own papers by extension from those tasks rather than lifting from a single published item. Cambridge develops and writes the IELTS test; the British Council and IDP administer it, so what Cambridge publishes is the primary evidence for how items are made. Nothing from the Cambridge tasks is reproduced here beyond the short descriptions needed to name each mechanism.