Sophia is conducting an investigation to compare the effectiveness of Cognitive Behavioural Therapy (CBT) and Acceptance and Commitment Therapy (ACT) for treating generalized anxiety. She measures patients' anxiety levels using the GAD-7 anxiety scale (which yields a score from 0 to 21) after 8 weeks of treatment.
State a fully operationalised non-directional (two-tailed) alternative hypothesis for Sophia's investigation.
638 exam-style questions on Edexcel A Level Psychology Methods. Each one has a worked solution and a mark scheme showing where the marks go.