Working memory and educational achievement in children with intellectual disabilities.

The team tested the kids with intellectual disability and 63 typical kids. All were 8-11 years old.

They gave short memory games that tap three parts of working memory: repeating sounds, remembering pictures, and updating rules.

Then they checked reading, spelling, and math scores to see which memory game matched which school skill.

Kids with ID had lower scores on every test, but the links inside the group were clear.

Sound-repeat scores predicted reading and spelling. Rule-updating scores predicted math. Picture memory did not predict either subject.

Chou et al. (2010) ran a near-copy study the same year and found the same sound-reading link. The two papers act like direct replications even though they used slightly different reading tests.

Scalzo et al. (2015) followed younger kids with ID for two years. They showed that early sound skills keep predicting later reading growth. The 2010 study adds the helpful detail that rule-updating, not sounds, is the math signal.

Poppes et al. (2016) looked at autistic kids and found weak sound memory but normal picture memory. That pattern matches the ID group here, hinting that phonological gaps may cross diagnoses and still drag literacy.

Lecavalier et al. (2006) had earlier painted a gloomy picture: kids with ID score far below peers in literacy. The 2010 findings do not contradict that; they simply show which levers—sound loop for reading, rule updater for math—teachers can actually pull.

You now have a quick map: if reading is the goal, probe how well the child repeats nonsense words or rhymes. If math is the goal, probe how well the child updates rules in a card-sort or counting game. Pick one target, track it weekly, and lighten the other load while you work.