The behavioral assessment scale used to measure depressive symptoms had high ecological validity.
However, validity was still a concern because the clinical psychologist conducting the post-treatment evaluations knew whether each participant was in the active cognitive therapy group or the waiting-list control group.
Explain how this could have affected the validity of the 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.
