Dr. Beatrice conducted an experiment to investigate the effect of cognitive load on problem-solving speed. She used a repeated measures design where 18 participants solved a set of 10 complex logical puzzles while listening to a continuous spoken-word podcast. Immediately afterward, the same 18 participants were asked to solve the exact same 10 logical puzzles in complete silence.
Explain one way in which Dr. Beatrice could have improved this 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.
