An occupational health researcher wanted to investigate whether using an ergonomic office chair designed to support the lumbar spine would reduce lower back discomfort in remote software developers who work sitting down for at least 8 hours a day.
The researcher used a repeated measures design with a sample of 30 remote developers.
At the end of each two-week condition, participants were emailed a link to self-report their average daily lower back discomfort over that period on a scale of 1 to 10, where 1 indicated completely pain-free and 10 indicated extreme discomfort.
Explain how this method of measurement might have affected the validity of the data collected.
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.