City Research Online

Evaluation of core vocabulary therapy for deaf children: Four treatment case studies

Herman, R., Ford, K., Thomas, J. , Oyebade, N., Bennett, D. & Dodd, B. (2015). Evaluation of core vocabulary therapy for deaf children: Four treatment case studies. Child Language Teaching & Therapy, 31(2), pp. 221-235. doi: 10.1177/0265659014561875


This study evaluated whether core vocabulary intervention (CVT) improved single word speech accuracy, consistency and intelligibility in four 9−11-year-old children with profound sensori-neural deafness fitted with cochlear implants and/or digital hearing aids. Their speech was characterized by inconsistent production of different error forms for the same lexical item. The children received twice weekly therapy sessions for eight weeks. Fifty target words were drilled and changes in production assessed for accuracy and consistency. Generalization of consistency and accuracy was assessed on non-targeted words. There were four assessment points: six weeks pre-therapy; immediately before therapy; immediately following therapy and six weeks post-therapy. In addition, 10 unfamiliar listeners judged the intelligibility of audio recordings of the children’s speech before and after therapy. The children’s consistency and accuracy of single word production improved following CVT. Consistency generalized to untreated words. Sentence intelligibility ratings improved and more target words were identified after therapy. These case studies suggest that CVT merits further investigation as an effective intervention approach for deaf children, enhancing consistency, accuracy and intelligibility of speech.

Publication Type: Article
Additional Information: Copyright Sage 2015
Publisher Keywords: Core vocabulary therapy, deaf, hearing-impaired, intervention, listener feedback, speech consistency, speech intelligibility
Subjects: R Medicine
Departments: School of Health & Psychological Sciences
SWORD Depositor:
[thumbnail of Herman et al Evaluation of Core Vocabulary Therapy for Deaf Children.pdf]
Text - Accepted Version
Download (210kB) | Preview


Add to AnyAdd to TwitterAdd to FacebookAdd to LinkedinAdd to PinterestAdd to Email


Downloads per month over past year

View more statistics

Actions (login required)

Admin Login Admin Login