A developmental psychologist conducted a meta-analysis of 18 longitudinal studies to investigate the relationship between infant exposure to natural outdoor environments and subsequent cognitive attention span scores in middle childhood (ages 7–11).
Explain one methodological advantage of using a meta-analysis rather than a single longitudinal study for this investigation.
66 exam-style questions on Edexcel A Level Psychology Research methods and skills, covering Research methods and skills. Each one has a worked solution and a mark scheme showing where the marks go.