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PsychologyAQA (7182) / Edexcel (9PS0)Research Methods

Research Methods — A-Level Psychology Revision

AQA / Edexcel A-Level Psychology

Research methods is examined on every A-Level Psychology paper and carries significant marks across both AQA and Edexcel specifications. This interactive tool covers the scientific process, experimental designs (independent groups, repeated measures, matched pairs), sampling methods, ethical guidelines (BPS Code of Ethics), variables and operationalisation, validity and reliability, and inferential statistics (sign test, chi-squared, Mann-Whitney U). Practise designing studies, identifying methodological flaws, and interpreting data — essential skills for research methods questions on all papers.

Uses Google Fonts (Fraunces, DM Sans). Requires an internet connection for full styling.

Frequently asked questions

What is the difference between validity and reliability in psychology?+
Validity refers to whether a study measures what it claims to measure (internal validity) and whether findings can be generalised (external validity). Reliability refers to consistency — a reliable study produces the same results when replicated under the same conditions.
What are the three experimental designs in psychology?+
The three designs are: independent groups (different participants in each condition), repeated measures (same participants in all conditions), and matched pairs (participants matched on key variables then allocated to different conditions). Each has strengths and limitations regarding participant variables, order effects, and practicality.

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