Does screen time damage your toddler's development? Researchers from University College London and leading universities in the US, UK, and Australia have spent years tracking thousands of children from birth to age three to answer this question—and their findings are more nuanced than the simple rules parents often hear.
The old guidance said no screens before age two. The World Health Organization still recommends this, but even the experts who wrote those guidelines admit the evidence was thin, mostly based on old television studies from the 1980s and 1990s.
Co-viewing with a parent changes everything
The most important finding: what matters is not how much screen time, but what happens during it. Children who watched educational videos with a parent who talked about what they were seeing showed no developmental disadvantage compared to children with almost no screen exposure. The problem only emerged when children watched passively and alone, or when television ran in the background during the day.
Background TV in your home damages language growth
A study of 32 research papers found that each extra hour of background television reduced the number of words parents spoke to their child by around 770 words per hour. Since adult conversation is the single strongest driver of vocabulary growth in the first three years, this matters. For Singapore families, this means a television on during mealtimes or playtime is likely more harmful than a 20-minute educational app session where you sit together and comment on what you see.
The real risk: screens replacing play, not filling spare time
A 2021 study tracking 2,800 children found no meaningful difference in learning, emotional development, or school-readiness between children with low and moderate screen time—but only when screens didn't crowd out floor play, outdoor time, or one-on-one interaction with parents. The danger is displacement: when screens replace active play rather than fitting into a varied day alongside it.
What works for your family
- Video calls with grandparents under 18 months support attachment and language; keep screens away from meals and bedtime routines.
- If you introduce videos from 18 months onward, watch together and narrate what you see; disable autoplay so you control what plays.
- Aim for under one hour daily of interactive, co-viewed content (apps requiring drawing, matching, or responses) rather than passive watching.