40 exam-style questions on Edexcel GCSE Psychology 5.1 Social influence, covering 5.1.1 Key terms, 5.1.2 Factors affecting bystander intervention, 5.1.3 Conformity to majority influence, 5.1.4 Obedience to authority, 5.1.5 Behaviour of crowds, and 5.1.6 Preventing blind obedience. Each one has a worked solution and a mark scheme showing where the marks go.