Research
Short briefs on one study at a time: what it found, how strong it is, and what to try tonight.
Briefs
More screen time at 2 and 3, lower developmental scores later
In one large Canadian study, toddlers who had more screen time tended to score lower on a developmental screening test a year or two later.
Screen use and brain white matter in preschoolers
A small brain-imaging study found that preschoolers with more screen use had lower measures of white-matter integrity in areas tied to language and literacy.
Screen time at age 1 and later communication delays
In a big Japanese birth cohort, more daily screen time at age 1 was associated with higher odds of communication and problem-solving delays at ages 2 and 4.