A researcher treating clinical depression compares two psychotherapies. Therapy P requires clients to attend a 12-week course, and Therapy Q requires a matched sample of clients to attend a different 12-week course. The clients are all males who are 25 years old.
At the beginning and at the end of the 12-week courses, each client completes a 'depressive symptom severity' assessment graded out of 50, where a higher score indicates greater severity.
Identify one variable, other than gender and age, on which the clients should be matched in this study.
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.
