Working memory, short-term memory and reading proficiency in school-age children with cochlear implants.

OBJECTIVE: The objective of the study was to examine short-term memory and working memory through both visual and auditory tasks in school-age children with cochlear implants. The relationship between the performance on these cognitive skills and reading as well as language outcomes were examined in these children. METHODS: Ten children between the ages of 7 and 11 years with early-onset bilateral severe-profound hearing loss participated in the study. Auditory and visual short-term memory, auditory and visual working memory subtests and verbal knowledge measures were assessed using the Woodcock Johnson III Tests of Cognitive Abilities, the Wechsler Intelligence Scale for Children-IV Integrated and the Kaufman Assessment Battery for Children II. Reading outcomes were assessed using the Woodcock Reading Mastery Test III. RESULTS: Performance on visual short-term memory and visual working memory measures in children with cochlear implants was within the average range when compared to the normative mean. However, auditory short-term memory and auditory working memory measures were below average when compared to the normative mean. Performance was also below average on all verbal knowledge measures. Regarding reading outcomes, children with cochlear implants scored below average for listening and passage comprehension tasks and these measures were positively correlated to visual short-term memory, visual working memory and auditory short-term memory. Performance on auditory working memory subtests was not related to reading or language outcomes. CONCLUSIONS: The children with cochlear implants in this study demonstrated better performance in visual (spatial) working memory and short-term memory skills than in auditory working memory and auditory short-term memory skills. Significant positive relationships were found between visual working memory and reading outcomes. The results of the study provide support for the idea that WM capacity is modality specific in children with hearing loss. Based on these findings, reading instruction that capitalizes on the strengths in visual short-term memory and working memory is suggested for young children with early-onset hearing loss.

Patterns of spelling in young deaf and hard of hearing students.

The study examined the invented spelling abilities demonstrated by kindergarten and first-grade deaf and hard of hearing students. The study included two parts: In Part 1, the researcher compared three groups (deaf, hard of hearing, and hearing) using posttesting only on the Early Reading Screening Inventory, or ERSI (Morris, 1998), and in part 2 collected and analyzed samples of the spelling of deaf students in a Total Communication program. Analysis showed that the deaf group performed significantly differently in three areas: concept of word, word recognition, and phoneme awareness ("invented spelling"; Read, 1971). The deaf group outperformed the hearing and hard of hearing groups in concept of word and word recognition. But in phoneme awareness, the deaf group performed significantly less well than the hearing group. Therefore, the deaf group's spelling was followed for 1 year. Deaf students' spelling patterns were not the same as those of hearing and hard of hearing students. Deaf students' spelling miscues were directly related to the cueing systems of lipreading, signing, and fingerspelling.