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Research methods is one of the most important areas in AQA GCSE Psychology because it appears across both papers — not just in the Research Methods section of Paper 1. You will encounter research methods questions in every topic section, from Memory to Psychological Problems. This lesson covers the key research methods concepts as they appear in exam questions, along with evidence-based revision strategies to maximise your performance.
A critical fact that many students overlook: while Research Methods is listed as a Paper 1 topic, questions about research methodology can appear anywhere on either paper. For example:
Exam Tip: Do not treat Research Methods as a standalone revision topic. Practise applying research methods concepts to every topic you study. When you revise a key study, ask yourself: What was the IV? What was the DV? What was the design? What were the ethical issues? How could it be improved?
Many exam questions ask you to apply your understanding of experimental design to a described study or scenario. Here are the key concepts you must know.
| Term | Definition | Example |
|---|---|---|
| Independent Variable (IV) | The variable the researcher manipulates or changes | Whether participants are in a noisy or quiet room |
| Dependent Variable (DV) | The variable the researcher measures | Number of words recalled from a list of 20 |
Exam tip for identifying variables: The IV is what is different between the conditions. The DV is what is measured as the outcome.
| Type | Definition | Example |
|---|---|---|
| Directional (one-tailed) | Predicts the specific direction of the result | "Participants in a quiet room will recall more words than those in a noisy room." |
| Non-directional (two-tailed) | Predicts there will be a difference but not the direction | "There will be a difference in the number of words recalled between participants in a quiet room and a noisy room." |
| Null hypothesis | Predicts no significant difference or relationship | "There will be no significant difference in the number of words recalled between the two conditions." |
| Design | Description | Strength | Limitation |
|---|---|---|---|
| Independent groups | Different participants in each condition | No order effects; participants only do one condition | Individual differences may affect results (participant variables) |
| Repeated measures | Same participants do all conditions | Controls for participant variables | Order effects (fatigue or practice) may occur |
| Matched pairs | Different participants paired on key variables, one from each pair in each condition | Reduces participant variables without order effects | Time-consuming to match participants; perfect matching is difficult |
Examiners frequently ask about controlling variables. Key concepts include:
Evaluation of research methodology is one of the most frequently examined AO3 skills. You should be able to apply the following concepts to any study.
| Concept | Definition | How it appears in exam questions |
|---|---|---|
| Reliability | Whether the study would produce consistent results if repeated | "Explain one way the researcher could check the reliability of their findings." |
| Validity | Whether the study measures what it claims to measure | "Explain why this study may lack validity." |
| Ecological validity | Whether findings can be generalised to real-life settings | "The study was conducted in a laboratory. Explain one limitation of this." |
| Demand characteristics | When participants change their behaviour because they guess the aim of the study | "Explain how demand characteristics may have affected the results." |
| Social desirability | When participants give answers that make them look good rather than answering honestly | "Explain why the results of the questionnaire may be affected by social desirability." |
| Generalisability | Whether findings can be applied to the wider population | "The sample consisted of 30 female university students. Explain one limitation of this sample." |
| Ethics | Whether the study follows ethical guidelines (informed consent, protection from harm, right to withdraw, deception, confidentiality) | "Identify one ethical issue with this study and explain how the researcher could deal with it." |
AQA expects you to know the key ethical principles:
| Ethical principle | What it means | Common exam scenario |
|---|---|---|
| Informed consent | Participants must be told what the study involves and agree to take part | A study uses covert observation without telling participants |
| Deception | Participants should not be deliberately misled about the purpose of the study | Milgram told participants the study was about learning, not obedience |
| Right to withdraw | Participants must be free to leave the study at any time without penalty | A participant feels uncomfortable but is told they must continue |
| Protection from harm | Participants should not experience physical or psychological harm | Participants in a stress study become very anxious |
| Confidentiality | Personal data should be kept private and participants should not be identifiable | Results are published with participants' full names |
Data interpretation questions test your ability to read and draw conclusions from graphs, tables, and charts. These appear regularly on both papers.
When presented with a graph, you should be able to:
When presented with a table of data, practise:
When asked to "draw a conclusion" from data:
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