The influence of screen time on children's language development: A scoping review.
Nazeera F Karani, Jenna Sher, Munyane Mophosho
PMID 35144436WHAT IT FOUND
Screen time effects on language depend on what is watched and who is present.
Background TV and rapid videos reduce interaction and vocabulary, while co-viewing and slow-paced content can support learning. Children under two generally learn better from people than screens.
Key findings
01Background television and rapidly paced videos can disrupt play and reduce parent-child interaction, leading to lower vocabulary scores.
02Co-viewing with an adult who asks questions and interacts promotes vocabulary and comprehension, whereas child-directed viewing is less effective.
03Children under two years old generally do not learn new words from repeated exposure to child-directed television programs.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The review included only English-language publications, which may limit the generalisability of findings to non-English speaking contexts. The included studies were heterogeneous in design and population, making it difficult to draw definitive causal conclusions. The review was conducted in 2020, so it may not reflect the most recent changes in screen media platforms and usage patterns. The sources included were not within the South African context, despite the journal's focus, limiting local applicability.
Declared interests
No specific conflicts of interest or funding sources are declared in the provided text.
The easy way to misread this
Do not assume all screen time is harmful or all educational apps are beneficial. The review shows that effects depend heavily on content pace and adult interaction. Passive viewing of rapid videos is likely detrimental, while co-viewing slower, age-appropriate content can be supportive.