Dallas parents juggling work, childcare and Peppa Pig on repeat just got some fresh data from SMU that might make them reach for the off switch. A pair of new SMU-led papers finds that toddlers who watch more videos do not just have smaller vocabularies overall. They also lean on a different mix of early words than their lower-screen peers.
Researchers report that young children with heavier video habits tend to use fewer body-part words and relatively more words about people and furniture. The results come from caregiver surveys and follow-ups that tracked kids' language over time.
The primary paper surveyed 388 caregivers of 17- to 30-month-olds and found that higher video exposure was associated with a lower share of body-part words and a higher share of people and furniture words, according to reporting by The Dallas Morning News. The authors controlled for age, household income and total noun vocabulary to tease apart how video watching related to the kinds of words toddlers produced. That cross-sectional paper was paired with longitudinal work that tested whether early media habits predicted language a year later.
How Screens Shift The Kinds Of Words Toddlers Learn
Researchers say the pattern likely reflects differences between hands-on learning and passive viewing. Body-part words are often learned through touch and naming, while videos routinely spotlight characters and rooms.
"We know media is not just good or bad, it's much more nuanced," SMU assistant professor Sarah Kucker said in an SMU news release, which notes roughly 65% of the parent-reported video summaries included people-focused language. That content imbalance could nudge a toddler's early word list toward social labels and away from tactile vocabulary like body parts.
Parents' Personalities And Toddlers' Temperament Matter
A companion paper dug into why some families use more digital media in the first place and how that shapes language outcomes. The October 2025 study of 464 caregivers found that parents higher in conscientiousness reported less screen time for their kids, while toddlers with higher negative affect (fussiness) tended to watch more videos. That greater media time at age 2 predicted smaller vocabularies at age 3, per the paper in Developmental Psychology. The authors say family routines and temperament-driven calming strategies help explain how screens become embedded in everyday learning environments.
How Pediatricians And Researchers Suggest Parents Respond
Experts say the findings do not call for a total screen blackout, but they do reinforce existing pediatric guidance. The American Academy of Pediatrics discourages digital media for children younger than 18 months except for video-chatting, recommends high-quality co-viewed content for 18 to 24 months, and suggests limiting 2- to 5-year-olds to about one hour of high-quality programming daily.
SMU researchers likewise recommend co-viewing, pausing to ask questions, and pairing videos with real-world toys or outings so children can map screen words onto physical experiences, per the SMU release.
For Dallas parents, the takeaway is practical: screens are part of modern family life, so it is worth paying attention to why and how they are used. SMU's team plans more longitudinal work to untangle cause and effect, and the researchers say nuanced guidance, not just a stopwatch, will be more useful for families balancing work, childcare and learning. In the meantime, pediatricians and the SMU authors advise mixing shared, high-quality media with hands-on play and conversation to keep toddlers' early word banks broad.
