An educational psychologist is interested in the relationship between daily screen time (hours spent on digital devices) and academic self-efficacy (belief in one's academic ability) in Year 10 students.
The psychologist designed a questionnaire to measure academic self-efficacy, where higher scores indicated higher levels of academic confidence. A sample of 25 Year 10 pupils from one local secondary school completed the questionnaire.
She also asked the pupils to log their daily screen time over a school week (five days) in a digital diary to calculate an average daily screen time (in hours) for each student.
Explain why it was appropriate for the educational psychologist to use a correlation study rather than an experiment.
19 exam-style questions on AQA A Level Psychology Correlations. Each one has a worked solution and a mark scheme showing where the marks go.