In a clinical trial investigating the effectiveness of a new computerized cognitive remediation therapy (CRT) for patients diagnosed with schizophrenia, researchers compared a treatment group using the CRT application with a control group playing basic, non-therapeutic computer games.
The researchers were concerned that the outcome measures of cognitive recovery might be biased by demand characteristics and investigator effects.
Explain how the researchers could design or conduct this study to eliminate or reduce both demand characteristics and investigator effects.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.