A team of researchers is investigating the short-term cognitive effects of blue-light exposure. They design a laboratory experiment to investigate the effect of wearing blue-light filtering glasses compared to standard clear-lens glasses on the time taken by participants to complete a series of complex spatial-reasoning puzzles on a tablet screen.
Outline one weakness of conducting this study as a laboratory experiment.
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.