Marcus conducted a laboratory experiment to investigate how a defendant's accent (regional vs. standard) influences mock-jury guilt ratings. He obtained an opportunity sample of 25 fellow university students who listened to a short, 30-second audio recording of a mock defendant.
Explain one improvement Marcus could make to his investigation.
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.
