A educational psychologist wants to investigate whether taking structured five-minute active breaks during a study session improves subsequent factual recall compared to studying continuously. The psychologist plans to use an experimental design to test this.
Outline how you would use random sampling to obtain a sample of 25 participants for this study from a population of 150 students in a college common room.
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.