Phonological Processing, Language, and Literacy: A Comparison of Children with Mild-to-moderate Sensorineural Hearing Loss and Those with Specific Language Impairment

2001 ◽  
Vol 42 (3) ◽  
pp. 329-340 ◽  
Author(s):  
Josie Briscoe ◽  
Dorothy V. M. Bishop ◽  
Courtenay Frazier Norbury
Author(s):  
Laurence B. Leonard

Children with specific language impairment (SLI) have a significant deficit in their ability to acquire language that cannot be attributed to intellectual disability, neurological damage, hearing loss, or a diagnosis of autism. These deficits can be long-standing, and adversely affect other aspects of the affected individual’s life. There seems to be a genetic component to SLI, but the disorder is not likely to be traced to a single gene. The problem appears to be universal, but symptoms vary depending on the language being learned. Current attempts to account for SLI have increased our understanding of the most salient symptoms of the disorder, but a full understanding of SLI is not yet within reach.


2005 ◽  
Vol 48 (5) ◽  
pp. 1187-1203 ◽  
Author(s):  
L. F. Halliday ◽  
D. V. M. Bishop

It has been suggested that specific reading disability (SRD) may be attributable to an impaired ability to perceive spectral differences between sounds that leads to a deficit in frequency discrimination and subsequent problems with language and literacy. The objective of the present study was threefold. We aimed to (a) determine whether children with mild to moderate sensorineural hearing loss were impaired in their ability to discriminate frequency, (b) assess the extent to which any such deficits may be due to an inability to use information derived from phase locking, and (c) examine whether frequency discrimination abilities were predictive of measures of word and nonword reading and nonword repetition. Difference limens for frequency (DLFs) were obtained for 22 children with mild to moderate hearing loss (SNH group) and 22 age-matched controls (CA group) at central frequencies of 1 kHz, where phase-locking information is available, and 6 kHz, where it is not. A battery of standardized tests of language and literacy was also administered. The SNH group exhibited significantly elevated DLFs at both 1 and 6 kHz relative to controls, despite considerable variability of thresholds in both groups. Although no group differences were found for receptive and expressive vocabulary, receptive grammar, and nonword reading, the SNH group performed worse than controls on word reading and nonword repetition, even though word reading acores were age-appropriate. Frequency discrimination abilities were associated with reading and nonword repetition across groups, but these correlations largely disappeared when the two groups were analyzed separately. Together, these results provide evidence for a dissociation between impaired frequency discrimination and relatively "spared" language and literacy in children with mild to moderate sensorineural hearing loss. These results cast doubt on the assertion that a deficit in frequency discrimination necessarily leads to marked deficits in the development of language and literacy.


2005 ◽  
Vol 48 (6) ◽  
pp. 1378-1396 ◽  
Author(s):  
Hugh W. Catts ◽  
Suzanne M. Adlof ◽  
Tiffany P. Hogan ◽  
Susan Ellis Weismer

Purpose: The purpose of this study was to determine whether specific language impairment (SLI) and dyslexia are distinct developmental disorders. Method: Study 1 investigated the overlap between SLI identified in kindergarten and dyslexia identified in 2nd, 4th, or 8th grades in a representative sample of 527 children. Study 2 examined phonological processing in a subsample of participants, including 21 children with dyslexia only, 43 children with SLI only, 18 children with SLI and dyslexia, and 165 children with typical language/reading development. Measures of phonological awareness and nonword repetition were considered. Results: Study 1 showed limited but statistically significant overlap between SLI and dyslexia. Study 2 found that children with dyslexia or a combination of dyslexia and SLI performed significantly less well on measures of phonological processing than did children with SLI only and those with typical development. Children with SLI only showed only mild deficits in phonological processing compared with typical children. Conclusions: These results support the view that SLI and dyslexia are distinct but potentially comorbid developmental language disorders. A deficit in phonological processing is closely associated with dyslexia but not with SLI when it occurs in the absence of dyslexia.


2015 ◽  
Vol 44 (1) ◽  
pp. 1-35
Author(s):  
JOANNA C. KIDD ◽  
KATHY K. SHUM ◽  
ANITA M.-Y. WONG ◽  
CONNIE S.-H. HO ◽  
TERRY K. AU

AbstractAuditory processing and spoken word recognition difficulties have been observed in Specific Language Impairment (SLI), raising the possibility that auditory perceptual deficits disrupt word recognition and, in turn, phonological processing and oral language. In this study, fifty-seven kindergarten children with SLI and fifty-three language-typical age-matched controls were assessed with a speech-gating task to measure spoken word recognition, psychophysical tasks to measure auditory Frequency Modulation (FM) detection and Frequency Discrimination (FD), and standardized psychometric tests of phonological processing and oral language. As a group, children with SLI took significantly longer than language-typical controls to recognize words with high neighborhood density, perhaps reflecting subpar phonological representations. FM, but not FD, was significantly worse in SLI. However, while both poorer speech-gating performance and poorer auditory thresholds (FM) were evident in SLI, spoken word recognition did not mediate any relation between auditory perception and either phonological processing or oral language.


2006 ◽  
Vol 27 (4) ◽  
pp. 548-552 ◽  
Author(s):  
Judith A. Bowey

Individual differences in nonword repetition (NWR) show a particularly strong association with vocabulary acquisition for both first- (L1) and second-language (L2) learners, and they serve as a behavioral marker for specific language impairment (SLI) in children (Gathercole, 2006). However, this association is susceptible to alternative explanations.


2015 ◽  
Vol 4 (1) ◽  
pp. 15-22
Author(s):  
Amina Asif Siddiqui ◽  
Verda Nadeem Butt ◽  
Saamia Bilal Khan

Objective By 6 years, typically developing children have adequate reading/ reading comprehension, and writing skills. Per evidence-based research, phonological development is a pre-requisite to literacy skills as shown in the growth of receptive/expressive language modalities. Hypothetically, children develop phonological skills mainly through listening unlike children with congenital hearing impairment (HI), who lacks language and acquisition of phonological skills prior to literacy. This study aims to establish a computer- based program called Articulation, Language and Literacy Program (ALLP), following Aural-Oral Approach in children with HI to develop literacy. Method Phonological skills were introduced through the program to 10 children with sensorineural hearing loss targeting areas of articulation, language, and literacy skills, all of whom received early intervention through binaural hearing-aids or monaural cochlear implant. This program facilitated sound-word associations required for reading, simultaneously correcting production of speech, and developing lexical skills. Auditory training was mandatory through all stages of literacy development. Verbal responses and listening skills for speech sounds were recorded on weekly basis with individually tailored assessment tools. Generalization of therapeutic skills was facilitated through handouts given to parents. Conclusion This study reveals that early intervention is critical to language development and literacy skills, leading to academic success of children with hearing impairment in the mainstream academic environment.


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