A cognitive psychologist is researching the impact of ambient scent on spatial reasoning. They want to test whether exposure to a peppermint essential oil mist improves the speed at which participants can solve a complex 3D physical block-assembly puzzle compared to a control condition with unscented air.
Outline one weakness of using a repeated measures design in this study.
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.