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.
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.