Answer source-analysis and research questions
Build focused answers to source questions and evaluate research methods before suggesting a fair test of a claim.
Exam scope and assessment notes
This lesson uses original StudyForA explanations and fictional practice scenarios; it is not Cambridge text or an official assessment. The current syllabus for the learner's exam year and their centre instructions take precedence. All 22 broad themes are optional issue contexts, not 22 bodies of facts to memorise: Cambridge says topic knowledge is not assessed and candidates are not expected to experience every theme. Candidates select relevant themes with their teacher. Paper 1 / Component 1 is externally assessed. Component 2 is internally set and externally marked; use centre guidance for topic choice and submission. Component 3 is internally assessed and externally moderated; it requires a real team of two to five and centre assessment. StudyForA practice is original self-check support, not Cambridge material, an official mark scheme, an authenticated report, assessed team evidence or a predicted grade. Private candidates cannot enter for 0457; confirm the exam year, series and centre arrangements.
Before you begin
- Read the question and identify the issue, source or assessment component it concerns.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
What should a source-based answer do first?
What you will learn
- Analyse information, arguments and perspectives from several sources
- Evaluate evidence and research
- Suggest how to research or test a claim
Use the source and the question together
For source-analysis questions, identify the information the question requests, select relevant details and explain their meaning. Keep attribution clear: one source says or shows something; it does not automatically establish a whole-population fact.
Evaluate method before proposing a test
For research questions, assess the sample, measure, procedure and limitations. A useful test names the data needed, who or what will be compared, how the method stays consistent and what ethical safeguards apply.
Sources for this lesson
Pause and explain
Which test proposal is more useful?
Worked example
A fictional source reports that 18 of 30 surveyed commuters support a later bus. Explain one finding and one limitation without overclaiming.
Show the worked solution
- State the result with the sample size and source context.
- Explain what the result suggests about respondents.
- State why the sample may not represent all commuters.
Answer In this survey, 18 of 30 respondents supported a later bus, so support was reported by a majority of those surveyed. If the sample was collected at one stop or time, it may not represent commuters using other routes or schedules.
Try a topic test
Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.
Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
A source says 12 of 20 visitors in one afternoon used a new accessible entrance. Write a careful inference and one limitation.
Give me a hint
Keep your inference to the visitors, place and time actually measured.
Compare my reasoning
- Quote the count and context in your own words.
- State the inference with cautious scope.
- Identify what the sample does not include.
Twelve of the 20 visitors observed that afternoon used the new entrance, suggesting it was used by many of those visitors. One afternoon may not represent other days, seasons or visitors, and the source does not explain why the remaining eight used another entrance.
Look for these in your work
- Uses the supplied count accurately
- Uses cautious language
- Explains a context-specific limit
A study compares one town before and after a recycling campaign. Suggest two improvements to test whether sorting rates changed.
Give me a hint
Make measurements comparable and check for other changes.
Compare my reasoning
- Use the same definition and measurement method at both times.
- Collect repeated readings or a suitable comparison area.
- Record other changes and report the limits of the design.
Measure sorting using the same categories, sampling points and method over several comparable weeks. A similar area without the campaign could provide a comparison if it is suitable. Record changes in collection service or weather. These steps strengthen the test but may not isolate the campaign as the only cause.
Look for these in your work
- Keeps definitions consistent
- Adds repetition or a comparison
- Considers other explanations
A source-based exam question asks you to evaluate research from a short description. Give a four-part answer structure.
Give me a hint
Describe the method, explain its value, qualify its limitation and propose a linked improvement.
Compare my reasoning
- Name the sample and method accurately.
- Explain what the method can reveal.
- Explain a specific limitation and a matching improvement.
State who was studied and how; explain why that method can provide relevant evidence; identify a limitation such as a narrow sample or unclear measure; then suggest a practical improvement, such as a broader defined sample or repeated measure. Do not invent details that the source does not provide.
Look for these in your work
- Uses only stated method details
- Links value to the question
- Pairs a limitation with an improvement
Common mistakes
- Writing from memory instead of using the supplied sources
- Omitting sample or method details
- Suggesting a test without naming what data it would collect
What can you explain now?
What should a source-based answer do first?
Compare with the explanation
Answer the question using relevant details and accurate attribution
The answer must show what the supplied evidence supports.
After trying it yourself, choose your next review. This is your self-assessment.
Your review choice appears on Today. Sign in to sync it across devices.
Make it stick
Name one method detail to extract from a source before evaluating research quality.
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.