An investigator is conducting a study to examine the impact of binaural beats on spatial reasoning. Eighty undergraduate students are recruited through a university research registry.
In the first condition, participants complete a 3D mental rotation test while listening to 40 Hz binaural beats. In the second condition, the procedure is identical, but participants listen to pink noise.
Explain how the investigator could randomly allocate the 80 participants to the two experimental conditions so that there are equal numbers of participants in each group.
201 exam-style questions on OCR A Level Psychology Planning and conducting research. Each one has a worked solution and a mark scheme showing where the marks go.