A focused Cambridge O Level English Language 1123 unit on combining information from more than one source, identifying agreements and differences, comparing perspectives and producing a concise, evidence-based synthesis.
When a question gives you more than one source, strong reading means doing more than summarising each source separately. You must bring relevant information together, compare viewpoints, identify agreements and differences, and select evidence that answers the task.
R23: Synthesising Information and Comparing Viewpoints develops the ability to combine information from different texts accurately and selectively. The goal is a connected response rather than two isolated summaries.
SELECT → CONNECT → COMPARE → EVIDENCE → SYNTHESISE
Synthesis means bringing relevant ideas from different sources together to form one coherent response. It is not simply placing one summary after another.
Summary: tells what one source says. Synthesis: connects what different sources say about the same task.
Before reading for details, identify exactly what the question asks you to find, compare or explain. The wording of the task determines which information matters.
If the task asks about benefits and difficulties, information about background history may be less useful unless it directly supports one of those categories.
Not every fact in a source belongs in the final response. Select information that directly answers the question.
Ask: “If I remove this point, does my answer become less complete?” If not, the detail may be unnecessary.
When working with two sources, read each for its central ideas before comparing them. A quick source map can prevent confusion.
Source A: main viewpoint, reasons, evidence, tone.
Source B: main viewpoint, reasons, evidence, tone.
A comparison grid helps you place related ideas beside each other rather than treating the sources as two separate essays.
Issue | Source A | Source B | Relationship
Cost | expensive initially | affordable long term | both discuss cost differently
Convenience | saves time | requires planning | partial contrast
Two sources agree when they make compatible claims or reach similar conclusions.
“Both sources suggest…” · “Similarly…” · “Both writers emphasise…”
Sources may disagree directly, or they may simply emphasise different aspects of the same issue.
A difference does not always mean contradiction. One writer may focus on practical benefits while another focuses on environmental consequences.
A viewpoint is a position or way of seeing an issue. Compare what each writer believes, not merely what each writer mentions.
What does Writer A think? What does Writer B think? Where do those positions meet or separate?
Writers can approach the same subject with different attitudes: enthusiastic, cautious, sceptical, critical, optimistic or concerned.
One writer may describe a new technology enthusiastically, while another may acknowledge its benefits but remain cautious about its risks.
Two sources can contain similar information but give different importance to it. One may devote substantial attention to cost while another concentrates on convenience.
Compare not only what is mentioned, but also what receives the greatest emphasis.
Writers may support similar claims with different kinds of evidence: personal experience, examples, statistics, expert views or observations.
Source A may rely on personal experience, whereas Source B may use numerical evidence. Both can address the same issue while creating different impressions of authority.
Be precise when comparing. Two writers may share a general position but differ in strength, reasons or conditions.
Instead of “Both writers completely agree,” write “Both writers recognise the benefit, although Source B is more cautious about its limitations.”
A writer may accept one part of an idea while rejecting another. Recognising partial agreement produces more accurate synthesis.
Both writers support public transport, but one argues that it should replace most car journeys while the other sees it as one option among several.
Direct contradiction occurs when sources make incompatible claims about the same point.
Source A states that the scheme reduced costs, while Source B claims that it increased costs. The difference should be reported accurately rather than silently reconciled.
Good synthesis uses enough evidence to demonstrate the comparison without copying large amounts of source material.
Select the smallest amount of evidence that clearly proves the relevant point.
Paraphrasing expresses a source idea in your own words while preserving its meaning. It is especially important when producing a concise synthesis.
After paraphrasing, ask: “Have I kept the original meaning, including its conditions or limitations?”
Copying long phrases can make a response dependent on the source and may prevent you from demonstrating your own control of the information.
Read the point, identify its essential meaning, then express that meaning accurately and concisely.
When sources present different views, make it clear which writer or source supports each idea.
“Source A argues…” · “In contrast, Source B suggests…” · “Both writers recognise…”
If both sources make essentially the same point, do not present the same information twice as though it were two different ideas.
“Both sources identify cost as a concern, although Source A focuses on initial expense while Source B emphasises long-term savings.”
A synthesis is usually clearest when organised by idea or comparison point, not by source.
Source-by-source: everything from A, then everything from B.
Point-by-point: cost in A vs B, convenience in A vs B, environmental impact in A vs B.
Connectors make relationships visible. Choose them carefully.
Similarity: similarly, likewise, both.
Contrast: however, whereas, in contrast, unlike.
Qualification: although, while, despite this.
Development: furthermore, additionally, another point is.
A synthesis should be economical. Repetition, unnecessary examples and long introductions can weaken focus.
“Does every sentence contribute a relevant comparison or supporting point?”
Do not exaggerate a source's position. Preserve important qualifications such as “may”, “often”, “some” and “in certain circumstances”.
If a source says a method can reduce costs, do not write that it always reduces costs. The change in certainty alters the original meaning.
Source A says cycling is good because it is healthy. Source A also says it saves money. Source B says cycling is good for the environment. Source B says it can be difficult.
Both sources present cycling positively, but they emphasise different benefits. Source A focuses on personal advantages, particularly health and cost, whereas Source B stresses the environmental benefit. However, Source B is more cautious because it also recognises practical difficulties, creating a less completely positive view.
When a task asks you to compare perspectives, combine position + evidence + attitude.
“Both writers recognise the convenience of the scheme. However, Writer A is strongly supportive, presenting convenience as sufficient justification, while Writer B is more cautious and argues that convenience must be balanced against cost.”
A strong response can show several relationships rather than forcing every source into a simple “agree/disagree” pattern.
Agree: both identify benefit.
Contrast: they differ on cost.
Qualification: one accepts a limitation that the other does not discuss.
S — Scan: Identify the exact task and relevant parts of each source.
C — Categorise: Group related information by idea.
A — Align: Put corresponding viewpoints beside each other.
L — Link: Explain agreement, contrast or qualification.
E — Express: Write one concise, coherent synthesis in your own words.
Source A: A community organiser argues that local gardens improve neighbourhoods by providing fresh produce, exercise and opportunities for people to meet.
Source B: A resident supports community gardens but warns that they require volunteers, regular maintenance and suitable space.
Question: What do the two sources say about community gardens?
Strong answer: Both sources view community gardens as beneficial to local communities. Source A emphasises their social and personal advantages, including fresh food, exercise and opportunities to meet others. Source B also supports the idea but presents a more cautious perspective by highlighting the practical demands of volunteering, maintenance and available space. Thus, both recognise benefits, while Source B places greater emphasis on the conditions needed for those benefits to be sustained.
Synthesis is the skill of joining evidence intelligently. Do not merely collect what each source says. Identify relationships, preserve accuracy, compare viewpoints and build one focused answer to the task.
Test your ability to synthesise information and compare viewpoints accurately.