A psychologist investigated the relationship between daily smartphone screen use and sleep quality among undergraduate students at a university. The psychologist posted an invitation on the student union’s online forum. Twelve students responded, agreeing to track their usage and complete a sleep questionnaire.
Smartphone screen use was measured as the average minutes of active screen time per day over a one-week period using the students' built-in screen time applications. Sleep quality was self-reported using a questionnaire with scores ranging from 1 to 20, where a higher score indicates better sleep.
Write a suitable operationalised non-directional hypothesis for this investigation.
Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 689 questions, matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
