Researchers want to investigate how physical learning environments impact student motivation. A researcher wants to study whether high-school students feel more motivated when learning in classrooms with abundant natural light (large floor-to-ceiling windows) compared to classrooms with standard artificial fluorescent lighting. The study is to be conducted at one suburban secondary academy with 450 students on the roll.
Explain two factors that could affect the external validity of this study.
201 exam-style questions on OCR A Level Psychology Planning and conducting research. Each one has a worked solution and a mark scheme showing where the marks go.