A psychologist wanted to investigate whether there is a difference in sustained attention span between professional video-gamers and non-gamers. She recruited 25 professional video-gamers and 25 non-gamers, then measured their performance using a computerised continuous performance task.
Explain why this study can be described as a quasi-experiment.
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.