Maya conducted an investigation to evaluate the effectiveness of a online Cognitive Behavioural Therapy (CBT) application for moderate anxiety. She recruited a volunteer sample of 15 outpatients from a single local mental health clinic and asked them to complete a self-report anxiety questionnaire before and after using the application for four weeks. Her results showed a significant decrease in anxiety scores.
Explain one improvement Maya could make to her investigation.
Practise Edexcel A Level Psychology Research methods and skills with exam-style questions for A Level Psychology. 657 questions covering Research methods and skills, 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.
