Hyperlexia in children with autism spectrum disorders.

The team tested the kids with autism. Half had hyperlexia—early, strong word reading.

They matched each child to two peers: one with the same reading level, one the same age.

Then they gave the same reading tests to all three groups to see who read best.

Hyperlexic kids with autism read words as fast as their reading-level peers.

They beat other autistic kids who lacked hyperlexia.

Yet their story understanding stayed low—no better than younger, same-reading-level peers.

Plaisted et al. (2006) first mapped this scatter a year earlier. Their case series showed autistic readers often decode fine but understand little. Plant et al. (2007) now proves the pattern with matched groups.

Floyd et al. (2021) zooms in on why comprehension lags. They found autistic youth struggle to learn all the linked meanings of one word, like “cap” as hat, bottle top, or salary limit. This helps explain the gap M et al. saw.

Reichard et al. (2019) tracked vocabulary growth from . Autistic kids kept pace but stayed a little behind peers. This slow, steady gap feeds the later reading-comprehension problem M et al. documented.

If you teach a child with autism who reads words far above age level, do not assume full understanding. Check comprehension with simple wh- questions after every short text. Target multiple meanings of key words and use visuals to link them.