On average, students with ADHD in addition to language comprehension difficulties who received Visualizing and Verbalizing® instruction achieved significant improvements in comprehension. They made large (significant) standard score changes on three of the four measures. Additionally, the 22-point percentile increase in Comprehension put these students within the normal range (25th–75th percentile). Their pre- to posttest results were statistically significant on all measures.

Students With Attention Deficit Hyperactivity Disorder (ADHD) Who Received Comprehension Instruction

Average Age: 12.9

Number of Students: 1,202

Average Hours of Instruction: 104.0

Lindamood-Bell Instruction Implemented: Visualizing and Verbalizing