Some research suggests that digital technology use is linked to cognitive performance, with individuals who have high daily screen time showing lower selective attentional focus than those with low screen time. To investigate this further, a cognitive psychologist wants to use the correlation technique to examine the relationship between daily smartphone screen time (in minutes) and scores on a standardized selective attention test.
Explain one way that the design of this study could be modified to increase the generalisability of its findings.
201 exam-style questions on OCR A Level Psychology Planning and conducting research. Each one has a worked solution and a mark scheme showing where the marks go.