Differences in autism symptoms between minority and non-minority toddlers.

Tek et al. (2012) compared toddlers with autism who were from minority families with toddlers from white families.

They looked at scores on language, communication, and gross-motor tests given during routine autism evaluations.

The study used a simple before-and-after design with no extra control group.

Minority toddlers scored lower on every key skill: talking, listening, and big-body movement.

Lower scores mean the delays were spotted later, so these kids started help later.

Fombonne et al. (2022) looked at Black and White preschoolers already sent for an autism check. At that point both groups showed the same level of autism traits, but Black children still had slightly lower language and thinking scores.

The two studies seem to clash: Saime saw big gaps at diagnosis, Eric saw small gaps at referral. The gap shrinks once kids get through the door, telling us the biggest problem is getting minority toddlers referred in the first place.

Begeer et al. (2009) helps explain why: pediatricians were less likely to refer minority kids for any autism testing unless they used a structured checklist. Together the three papers trace a pipeline problem—minority toddlers are missed early, arrive with bigger delays, and still face hurdles even after referral.

If you screen in a community with lots of minority families, lower scores may not mean milder autism—they may mean the child was found later. Use structured screening tools on every 18- and 24-month visit, and trust the numbers even when parent concern is mild. Fast-track kids who score low, and schedule a follow-up booster screening so none slip through.