Learning Center Results
Speech or Language Impairment—Comprehension
On average, students with an SLI, coupled with 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 17-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.
Results of Students With Speech or Language Impairment (SLI) Who Received Comprehension Instruction
Number of Students: 446
Average Age: 12.2
Average Hours of Instruction: 113.4
Lindamood-Bell Instruction Implemented: Visualizing and Verbalizing