Speech or Language Impairment—Comprehension
On average, students with prior SLI diagnoses with 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 15-point percentile increase in Written Language Comprehension put these students within the normal range (25th–75th percentile).
Students with a Prior SLI Diagnosis Who Received Comprehension Instruction Only
Years: Jan. 2008 – Sept. 2021
Number of Students: 569
Average Age: 12.2
Average Hours of Instruction: 121.1
Lindamood-Bell Instruction Implemented: Visualizing and Verbalizing