Dr. Vance is investigating whether the presence of a weapon (the weapon focus effect) during a simulated robbery affects the accuracy of facial identification. He is debating whether to use an independent groups design or a matched pairs design to assign his participants.
Compare independent groups and matched pairs experimental designs as used in criminological psychology.
51 exam-style questions on Edexcel A Level Psychology Research methods and skills, covering Research methods and skills. Each one has a worked solution and a mark scheme showing where the marks go.