All Humans Have a 'Theory of Mind'.

The team tested the kids with Down syndrome. They matched each child to a younger typical child with the same mental age.

They gave both groups tasks that check pragmatic language. These are skills like knowing when to speak, staying on topic, and reading social cues.

The study also looked at whether boys and girls with Down syndrome scored differently.

Kids with Down syndrome scored lower than the younger typical kids on every pragmatic task.

Girls with Down syndrome scored even lower than boys on direct tests. This gap stayed even when both groups had the same IQ level.

Neitzel et al. (2021) found that only a large share of kids with Down syndrome passed a false-belief test. They showed verbal short-term memory mattered more than grammar. Yu et al. (2023) extends this by showing pragmatic delays go beyond false-belief tasks.

Shojaeian et al. (2022) compared Swedish kids and also found typical children outperformed those with Down syndrome on theory-of-mind tasks. The new study adds sex differences as a key factor.

Anbar et al. (2024) tracked toddlers with autism and found early joint attention predicted later pragmatic skills. Yu et al. (2023) shows similar early markers may matter for Down syndrome, but with the twist that girls need extra attention.

When you assess a child with Down syndrome, check pragmatic skills early. Watch for girls who may need more support. Use tasks that go beyond simple false-belief tests. Track verbal memory and sex-specific patterns to guide your intervention plan.