Exposure to light-emitting screens before bedtime is widely believed to affect sleep quality. A team of sleep researchers wants to investigate the direct effect of evening screen exposure compared to reading a printed paper book on sleep onset latency (the time it takes to fall asleep). They plan to use an experimental design to test this.
Outline two ways in which this study can be designed to support the claim that psychology is a scientific discipline.
276 exam-style questions on OCR A Level Psychology Debates, covering Nature/nurture, Freewill/determinism, Reductionism/holism, Individual/situational explanations, Usefulness of research, Ethical considerations, Conducting socially sensitive research, and Psychology as a science. Each one has a worked solution and a mark scheme showing where the marks go.