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.
186 exam-style questions on Edexcel A Level Psychology Research methods and skills, covering Research methods and skills. Each one has a worked solution and a mark scheme showing where the marks go.