You have been asked to design a field experiment to investigate whether the presence of a background low-frequency hum (from ventilation systems) affects the cognitive processing speed of air traffic control trainees. The lead instructor has insisted that your experimental procedure must be completely objective.
Describe the procedure you could use in your field experiment.
Practise Edexcel A Level Psychology Methods with exam-style questions for A Level Psychology. 638 questions, matched to the Edexcel A Level Psychology (9PS0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.