A researcher is conducting a face-to-face laboratory experiment to investigate whether a participant's body posture (upright vs slumped) during a cognitive task affects the number of words they can recall from a list. The researcher reads the word list aloud to each participant and records their recalled words face-to-face.
Investigator effects may influence the results of this study. Explain how the researcher could modify the procedure to reduce these 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.