A research trial investigates the effectiveness of a new wearable acoustic device, 'FocusWave', designed to improve deep concentration levels in stock traders during high-volatility trading hours.
Explain one limitation of asking the stock traders to self-report their concentration levels when using 'FocusWave'.
Practise AQA A Level Psychology Self-report techniques with exam-style questions for A Level Psychology. 40 questions, matched to the AQA A Level Psychology (7182) 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.