Research methods Video Lectures to help you master the research methods unitAQA A-level Psychology – Paper 2 Research Methods (videos 1-12) Research Methods in 40 min Types of Experiment Observations self-report-techniques Case Study Content analysis Correlation Aims and Hypotheses Sampling Experimental Design Variables Ethics Psychology and the economy Research Methods (videos 13-24) Peer reviewReliabilityValidityFeatures of scienceReporting psychological investigationsTypes of datadescriptive statisticsDisplay of quantitative dataDistributionsLevels of measurementProbability and significanceInferential testing