Dr. Sterling conducted a laboratory experiment to investigate the effect of post-event discussion on the accuracy of eyewitness testimony. She recruited a sample of 15 academic staff from her university's psychology department and showed them a video of a daylight mugging. Half of the participants then discussed the video in pairs, where one member was a confederate who deliberately introduced misleading information about the perpetrator wearing a bright green backpack. The remaining participants sat in silence. Dr. Sterling then used a free-recall written report to assess their recall of the perpetrator's clothing.
Explain one improvement Dr. Sterling could make to her experiment.
Practise Edexcel A Level Psychology Content with exam-style questions for A Level Psychology. 1,059 questions covering Central nervous system and neurotransmitters, Effect of recreational drugs on transmission, Brain structure and aggression, Evolution and natural selection, Freud's psychodynamic explanation of aggression, Role of hormones in aggression, Individual differences, and Developmental psychology, 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.
