Research methods is the backbone of psychology, covering how psychologists design studies, collect data, and draw conclusions. In AQA A-Level Psychology, this topic is assessed across all three papers, making it essential for exam success. You'll learn about experimental and non-experimental methods, sampling techniques, ethical issues, and data analysis — including descriptive statistics and inferential tests like the sign test and chi-squared. Understanding research methods not only helps you critique studies but also prepares you for the 'Research Methods' section of Paper 2 and the practical investigation in Paper 3.

Why does this matter? Psychology is a science, and research methods are the tools that separate opinion from evidence. By mastering this topic, you'll be able to evaluate classic studies (e.g., Milgram, Zimbardo) and design your own investigations. The AQA specification emphasises critical thinking, so you'll need to identify strengths and weaknesses of different methods, such as lab experiments (high control, low validity) versus naturalistic observations (high validity, low control). This topic also links to issues and debates, like the nature-nurture debate and ethical guidelines.

In the wider subject, research methods underpin every area of psychology — from social to cognitive to biological. For example, when studying memory, you need to know how experiments are designed to test recall. The A-Level exam expects you to apply your knowledge to novel scenarios, so you must be comfortable with terms like 'independent variable', 'confounding variable', and 'demand characteristics'. Revision tip: create a glossary of key terms and practise writing evaluation points for each method.