Dr. Mercer conducted an investigation into the effectiveness of systematic desensitisation for aviophobia (fear of flying) using a virtual reality simulator. To assess progress, she measured the heart rate (in beats per minute) of 12 participants at the start of each of the 8 stages of the anxiety hierarchy using a standardized, automated chest-strap heart rate monitor.
Explain one strength of Dr. Mercer's study in terms of reliability.
Practise Edexcel A Level Psychology Content with exam-style questions for A Level Psychology. 1,059 questions covering Issues around drug taking, Biological explanations of drug addiction, Learning explanations of drug addiction, Treatments for drug addiction, Anti-drug campaign and strategies, Individual differences, and Developmental psychology, 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.
