Some research suggests that wearing blue-light blocking glasses during night shifts can improve subsequent daytime sleep quality for shift workers. To investigate this further, an occupational psychologist wants to conduct an experiment to study the effect of these glasses on coordinators working the night shift at a large logistics hub called 'OrbitLogistics', which has a total of 140 staff (men and women) aged between 21 and 45.
Explain how you would use the experimental method to conduct this research. Justify your decisions as part of your explanation.
In your answer, the required features that you must refer to are:
You should use your own experience of practical activities to inform your response.
62 exam-style questions on OCR A Level Psychology Practical activities. Each one has a worked solution and a mark scheme showing where the marks go.