A researcher wanted to investigate environmentally friendly consumer habits. They conducted a naturalistic observation at a major city supermarket during peak Saturday afternoon shopping hours. The researcher stood near the self-checkout kiosks and recorded whether shoppers purchased single-use plastic bags or used their own pre-brought reusable bags.
Outline two ways in which the naturalistic observation method used in this study could affect the validity of the data collected.
644 exam-style questions on OCR A Level Psychology Research methods and techniques. Each one has a worked solution and a mark scheme showing where the marks go.