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The problem
Intervention: Patterns of digital technology use and screen time (observational; not an intervention being tested)
Who it was tested with: 9-year-old children in Ireland across two cohorts: 1998 cohort (n=6,000+ in 2007/08) and 2008 cohort (n=7,000+ in 2017/18) from the Growing Up in Ireland longitudinal study.
The same group is measured before the intervention and again afterwards, with a baseline and an endline and sometimes a midline. Change is visible, but other causes cannot be ruled out.
"Multivariate linear regression models were conducted for these two cohorts from the Growing Up in Ireland (GUI) study, a multi-cohort longitudinal study with rich comparable data on a large sample of 9-year olds (N = 13,203)." The study uses regression analysis on large cross-sectional samples measured at two time points to estimate associations between screen time and well-being outcomes, representing a PRE_POST observational design with outcome direction showing harm (DOES_NOT_WORK).
Observational data cannot establish causation; only socioemotional well-being measured; cross-sectional within cohorts limits ability to track individual trajectories; unmeasured confounders may explain associations
Across countries and designs
2 studies · 1 country
