On average, students receiving Special Educations services who received Visualizing and Verbalizing® instruction achieved significant improvements in comprehension. They made large (significant) standard score changes on three of four measures. Additionally, the 13-point percentile increase in language Comprehension put these students within the normal range (25th–75th percentile). Their pre- to posttest results were statistically significant on all measures.
Results of Special Education Students Who Received Comprehension Instruction
Number of Students: 1,473
Average Age: 12.8
Average Hours of Instruction: 113.8
Lindamood-Bell Instruction Implemented: Visualizing and Verbalizing