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 Issues around drug taking, Biological explanations of drug addiction, Learning explanations of drug addiction, Treatments for drug addiction, Anti-drug campaign and strategies, 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.
