A psychologist wants to compare the effectiveness of two different revision techniques for GCSE Mathematics. To control for individual differences in mathematical ability, she pairs students who achieved identical scores on a baseline assessment. Within each pair, one student is randomly assigned to Technique A and the other to Technique B.
Which type of experimental design has the psychologist used?
Independent groups
Repeated measures
Matched pairs
Counterbalanced
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.