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 Diagnosis of mental disorders (4 Ds), Classification systems (DSM and ICD), Schizophrenia and one other disorder, Treatments for the two disorders, 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.
