A marine researcher carried out a structured observation of recreational scuba divers' ecological behaviours (such as avoiding contact with coral reefs or picking up underwater litter) during guided dives in a marine protected area.
What is meant by an 'investigator effect'? Explain a possible investigator effect in this observational study.
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.