Minor physical anomalies and behavior in children: a review.

The authors read every paper they could find on small body oddities and child behavior.

They looked at ear shape, finger length, head size, and other tiny birth marks.

The review covered kids with autism, hyperactivity, and typical development.

Boys with more of these small oddities acted out more often.

The link showed up for hyperactivity and developmental delays.

Girls had the same body marks, but their behavior stayed the same.

Griffith et al. (2012) and Tang et al. (2025) also hunt for early warning signs.

They track preterm birth instead of body marks, yet find the same end point: attention and behavior trouble.

All three papers say: catch the risk early, long before the child fails in school.

English et al. (1995) and Leader et al. (2022) narrow the lens to Angelman syndrome.

They list the exact behaviors you will see; McLean et al. (1983) give you a free way to spot risk in any child.

You can do a 30-second body scan during intake. Count curved fingers, low-set ears, or two hair whorls.

If you see three or more in a boy, plan extra baseline data on activity level and self-control.

Share the finding with parents: it is fast, costs nothing, and helps you catch problems before they grow.