A researcher investigating treatments for Generalised Anxiety Disorder (GAD) compares two interventions. Intervention X requires clients to participate in a 12-week course of Cognitive Behavioural Therapy (CBT), and Intervention Y requires a matched sample of clients to participate in a 12-week course of Mindfulness-Based Stress Reduction (MBSR). The clients are all males who are 30 years old.
At the start and end of the 12-week courses, each client completes an 'anxiety management' questionnaire, generating a score out of 50, where a higher score indicates better anxiety management.
How is using a matched pairs design in this study an improvement on using an independent groups design?
Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 689 questions, matched to the AQA A Level Psychology (7182) 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.
