Dominic conducted a laboratory experiment to investigate the accuracy of eyewitness identification using simultaneous versus sequential line-ups. Participants watched a short video of a staged convenience store theft. In one condition, participants were shown photographs of the suspect and distractors simultaneously (all at once). In the other condition, they were shown the photographs sequentially (one at a time). Dominic used a self-selected sample of 50 undergraduate psychology students who signed up via an online university portal.
Explain one improvement that Dominic could make to his study.
Practise Edexcel A Level Psychology Research methods and skills with exam-style questions for A Level Psychology. 657 questions covering Research methods and skills, matched to the Edexcel A Level Psychology (9PS0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
