Dr. Meade conducted an experiment to investigate the effect of a nudge campaign (using posters with health-warning labels) on healthier snack choices in a corporate cafeteria. She recorded the number of healthy snacks purchased over a one-week period while the posters were displayed. She did not measure purchases before the posters were introduced, and there was no control group.
Explain one improvement Dr. Meade could make to the design of her 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.
