In a laboratory experiment investigating the effects of revision techniques (spaced retrieval practice versus massed rereading) on science exam performance, researchers allocated 60 psychology students to one of two conditions.
Explain why the researchers allocated the participants randomly to the two conditions. How might the researchers have randomly allocated the students to the two conditions?
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.