Speech or Language Impairment—Comprehension
On average, students with a prior SLI diagnosed, coupled with language comprehension difficulties, who received Visualizing and Verbalizing instruction achieved significant improvements in comprehension. They made large (statistically significant) standard score changes on two of the three measures. Additionally, the 17-point percentile increase in Comprehension put these students within the normal range (25th–75th percentile).
Results of Students With Speech or Language Impairment (SLI) Who Received Comprehension Instruction
Number of Students: 501
Average Age: 12.3
Average Hours of Instruction: 119.3
Lindamood-Bell Instruction Implemented: Visualizing and Verbalizing