Cognitive subtypes in developmentally disabled children: a pilot study.

The team gave 54 kids with autism or other delays a full IQ test. They used the WISC-R and a visuospatial puzzle called Raven matrices.

They looked for patterns in the scores. The goal was to see if clear 'cognitive subtypes' popped out.

Fifty-one kids fit into one of four tidy profiles. The biggest group had strong visuospatial scores but weak language scores.

Surprise: kids who aced the puzzle task were not any less autistic. Visuospatial skill did not track with autism severity.

Matson et al. (1994) later showed the CARS autism score has three factors. Like D et al., they proved one number can't sum up a child.

Narzisi et al. (2013) found the CBCL Withdrawn scale spots toddlers who later get an ASD label. Both studies push us to use specific profiles, not one total score.

Rojahn et al. (2012) reviewed kids with pure language impairment. They saw no autism-like cognitive pattern. This backs D et al.'s point: subtypes differ even within delays.

Lee et al. (2021) tested the Theory-of-Mind Inventory and also found weak factor fit. Together the papers warn: single-score tools miss nuance.

Stop saying 'low-functioning' or 'high-functioning.' Look at the child's profile instead. A kid who solves puzzles with ease may still need heavy social teaching. Match your lessons to the pattern, not the label.