A researcher conducted a field experiment to investigate the effect of a new mobile mindfulness app on employees' self-reported daily stress levels over a two-week period. Participants in the experimental group used the app at their office desks during their lunch breaks, while participants in the control group did not use any app.
Identify one extraneous variable that could have affected the results of this study.
Suggest why it would have been important to control this extraneous variable and how the researcher could have controlled it.
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.
