Employees' self-reports of their hand hygiene practices in office communal kitchens are often highly unreliable. Most employees overestimate the frequency and duration of their handwashing to avoid appearing unhygienic to colleagues or researchers. A researcher decides to observe the actual handwashing behaviour of an opportunity sample of staff members.
Explain why it is more appropriate for the researcher to use an observation rather than a questionnaire in this case.
30 exam-style questions on AQA A Level Psychology Observational techniques. Each one has a worked solution and a mark scheme showing where the marks go.