Dr Aris conducted an experiment to investigate whether auditory stimulation using binaural beats affects working memory performance. He recruited a group of undergraduate students and asked them to perform a complex span task while listening to a 10 Hz alpha-frequency binaural beat audio track. Two days later, the same students performed an equivalent complex span task while listening to a neutral, steady pink noise audio track.
Identify the independent variable (IV) in 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.
