The discrepancy between verbal and visuoperceptual IQ in children with a specific learning disorder: An analysis of 1624 cases.

Cesare et al. (2019) pulled WISC-IV scores from 1,624 children already diagnosed with a specific learning disorder.

They looked at how often these kids showed a big gap between verbal comprehension and perceptual reasoning.

The team also checked if gender or subtype of learning disorder changed the pattern.

Most children with SLD had verbal scores at least 1.5 standard deviations below their visuoperceptual scores.

The reverse pattern—high verbal, low visuoperceptual—was rare.

Kids with this verbal < visuoperceptual gap also tended to have slower processing speed.

Blanchette et al. (2016) saw a similar split in Greek kids: children with specific language impairment had wider language deficits, while those with dyslexia showed sharper decoding problems.

Vugs et al. (2014) found that preschoolers with SLI had weak working memory and executive function; Cesare’s older sample shows the same verbal-versus-nonverbal gap can linger into school age.

van Roon et al. (2010) tracked visuomotor control and found kids with LD moved their hands less smoothly than peers; Cesare’s data suggest the visuoperceptual side may stay relatively strong even when verbal skills lag.

When you see a big verbal < visuoperceptual split on the WISC-IV, expect slower processing speed and plan extra time for verbal tasks.

Use the gap to explain to teachers why a child can solve puzzles yet struggle with oral directions.

Pair verbal goals with visual supports to leverage the child’s stronger perceptual reasoning.