Autistic traits and cognitive performance in young people with mild intellectual impairment.

The team looked at youth who had mild intellectual disability. They split them into two groups: those who also showed autism traits and those who did not.

Everyone took tests of executive function and theory of mind. The study asked whether the link between these skills, not each skill alone, marks autism traits.

The group with autism traits scored lower on cognitive flexibility. Inside that group, executive function and theory of mind still hung together even after IQ was held constant.

The pattern hints that the connection between the two skills may flag autism better than either deficit by itself.

Bhaumik et al. (2008) ran a near-copy study the same year and saw the same pattern: theory of mind and central coherence predicted autism traits across a school sample. The pair form an independent replication.

Anderle et al. (2025) extend the story by showing IQ mediates the EF-social link; they add younger kids and confirm that cognitive level must be part of the puzzle.

Ohan et al. (2015) seems to disagree: they found no EF gap between ASD and non-ASD youth with mild ID. The clash fades when you see they used broad group stats, while M et al. zoomed in on the EF-ToM tie within the ASD-range group.

When you test a child with mild ID, look at how executive function and theory of mind work together, not just raw scores. A tight link between the two may signal autism traits even if each score looks borderline. Try adding a quick flexibility task and a false-belief probe to your battery, then check if performance on one predicts the other.