Building vocabulary knowledge, especially breadth and depth of word meanings, is a crucial step in assisting students to read and comprehend print independently. A large body of research has documented the low reading achievement levels of a number of Deaf and hard-of-hearing (DHH) students. The goal of the present study was to examine the effects of a vocabulary intervention to teach 24 multiple-meaning words to fourth-grade DHH students in Saudi Arabia by utilizing a single-case experimental design (multiple probe design across participants). A total of 5 students with a profound hearing loss participated in the study. About 3 of 5 received the intervention, whereas two other students served as an additional control component and were administered the pretest and posttest only. The data showed that there was a significant improvement in the recognition and comprehension scores of students who received the intervention. In contrast, students who did not receive the intervention showed no significant improvement on the posttest.
Published by Oxford University Press 2020.