New research links early childhood heavy screen use to complex language difficulties

A study published in Frontiers in Psychology reveals that excessive screen time in early years may be associated with clustered language red flags in young children, prompting calls for stricter adherence to WHO guidelines and more active early learning routines.

Screens are woven into daily family life, but new research suggests that heavy use in the first years may be linked to a more tightly connected pattern of language difficulties in young children. The analysis, published in Frontiers in Psychology, found that children who exceeded the World Health Organization’s screen-time guidance were more likely to show groups of early language red flags that clustered together rather than appearing in isolation.

The WHO advises that children aged two to four should have no more than one hour of sedentary screen time a day, while infants under one year should not be exposed to screens at all. Those recommendations are part of broader guidance aimed at reducing sedentary behaviour, increasing active play and supporting healthy development in children under five.

Researchers from the University of Granada and the National Institute of Public Health at the University of Southern Denmark examined caregiver reports for 16,914 children aged one to five using data from the 2023 National Survey of Children’s Health. In the sample, 72% of children were using screens for at least an hour on weekdays, including 61% of those aged one and two and 81% of those aged three to five. Children with diagnosed conditions such as autism, ADHD or speech disorders were excluded from the analysis.

The study used network analysis, a method that looks at how different developmental warning signs relate to one another. Among children aged three to five, the links between language red flags rose sharply in the high-screen-time group, while the pattern was more modest in the younger age band. The strongest clustering in older children centred on understanding language, rather than producing it, suggesting that comprehension gaps may deserve particular attention in this age group.

Home routines also appeared to differ. Children with less screen time were more likely to be read to every day, and storytelling, singing and outdoor play were also more common in that group. The authors suggest those activities may help explain part of the pattern, although the study cannot prove that screen use causes language delays because it captures only a single point in time and relies on caregiver reports rather than direct testing. It also did not separate television from phones or tablets, and the differences in the language networks were not formally tested for statistical significance.

The findings fit with earlier research from the University of Southern Denmark linking mobile device screen time with poorer language development in toddlers. Taken together, the studies point to the same practical message for parents and carers: limit screen exposure where possible, share it when it is used, and make room for conversation, reading and back-and-forth play, which give young children more chances to practise listening and speaking.