Improving Academic Vocabulary for Adolescent Students With Disabilities: A Replication Study
Creating Habits That Accelerate the Academic Language of Students (CHAAOS) is a vocabulary intervention developed by O’Connor et al. to improve the academic vocabulary of middle school students with disabilities. This study was designed as a replication of O’Connor et al.’s study; CHAAOS lessons were taught to 33 sixth graders who received special education services for disabilities in English/Language Arts classes. Researcher-designed vocabulary and comprehension assessments for the taught words were administered pre- and post-instruction. The performance of students in this study was compared with the performance of students in O’Connor et al.’s study. Results demonstrated that the present students made similar gains in vocabulary and comprehension compared with the previous CHAAOS students and scored significantly higher than the previous comparison students who did not receive any instruction on the words. These findings support the use of CHAAOS for improving the academic vocabulary of students with disabilities.