Does screen time delay speech?

What the evidence says

Canadian and international pediatric groups agree that more screen time in the early years is linked with weaker language skills. The Canadian Paediatric Society points to a meta-analysis showing that greater screen exposure in infancy, including background TV, is tied to lower language skills at age 3 to 4. A Canadian study of infants in Toronto also found that toddlers using handheld devices like tablets and phones had a higher chance of expressive language delay by 18 months.

A larger systematic review of 42 studies found a negative link between screen time and language development across children under 12, though most of that research looked at understanding language (receptive) rather than talking (expressive) skills. One small trial in children already showing speech delay found that cutting screen time to near zero for three months led to more spoken vocabulary than continuing usual screen habits — this is one of the few studies that tested cause and effect directly, though it was small and not from Canada. Based on this, the Canadian Paediatric Society recommends no screen time at all for children under 2, and less than 1 hour a day for ages 2 to 5, specifically because early screen time can crowd out the face-to-face talk and play that build language skills.

The bigger concern isn't the screen itself but what it replaces: real back-and-forth conversation with a caregiver. If you're worried about your child's speech, screen time is one modifiable factor worth addressing, but a speech-language delay can have many causes, so it's worth discussing with your child's doctor regardless.