Developmental relationship between language and joint attention in late talkers.

Vuksanovic et al. (2013) watched late-talking toddlers during play. They counted how often each child pointed, showed toys, or looked back to share a moment.

They also tested each child’s language: how many words the child understood and how many the child said. Then they asked, “Do kids who share more also talk more?”

The late talkers pointed and shared just as much as younger kids who already talked on time. But those sharing acts did not line up with their own word counts or word understanding.

In plain words, a child could share tons of eye contact yet still speak only a handful of words. Joint attention and language were traveling on separate tracks.

Myers et al. (2018) saw the opposite pattern in toddlers with Down syndrome. When those kids responded to a point or gaze, stronger responses forecast bigger language gains.

Iao et al. (2024) found the same link in Taiwanese toddlers with autism. Better responding to joint attention predicted more words 18 months later.

Weiss et al. (2021) muddies the picture further. They showed toddlers with autism actually produce fewer joint-attention bids than late talkers. So the lack of connection seen here seems tied to the “late-talker” label itself, not to autism or Down syndrome.

If you serve late talkers without an autism or Down syndrome diagnosis, do not bank on joint-attention scores to forecast language growth. Screen language directly and often. Use the data to pick language goals, not social goals, for these kids.