Dr Vance conducted an investigation into the effectiveness of a new mindfulness-based mobile application designed to reduce occupational stress among corporate employees. He recruited a sample of 15 volunteer participants from a single tech startup in London. To assess stress reduction over a 4-week period, Dr Vance relied on the participants' retrospective weekly self-reports of their stress levels.
Explain one improvement that Dr Vance could make to his investigation.
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.
