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Auditory processing in children with specific language impairments: are there deficits in frequency discrimination,
Andreas Nickisch1, Claudia Massinger
1Department of Phoniatrics and Pedaudiology, Kinderzentrum Munchen gGmbH, and Institute of Social Pediatrics, Ludwig Maximilian University Munich, Munich, Germany. andreas.nickisch@lrz.uni-muenchen.de
Summary
Children with specific language impairment (SLI) show deficits in frequency discrimination (FD) but not in general nonverbal auditory (NVA) processing or temporal auditory abilities. These FD deficits correlate with phonological and language skills.
Area of Science:
- Auditory Neuroscience
- Developmental Psychology
- Speech and Language Pathology
Background:
- Specific language impairment (SLI) is often linked to nonverbal auditory (NVA) deficits.
- The precise nature of these auditory deficits in SLI, particularly concerning temporal processing and frequency discrimination (FD), remains incompletely understood.
Purpose of the Study:
- To investigate auditory processing skills in children with SLI compared to typically developing controls.
- To determine if SLI is associated with deficits in frequency discrimination (FD), auditory time processing, or general NVA skills.
Main Methods:
- Compared 27 children with SLI (ages 8-11) to 27 age- and gender-matched controls.
- Assessed performance on five NVA skills using just noticeable differences (JND) and time order judgments (TOJ) for tasks including FD, intensity discrimination, and gap detection.
Main Results:
- Children with SLI demonstrated significantly poorer performance on frequency discrimination (FD) tasks (JND and TOJ) compared to controls.
- No significant differences were observed between groups on other NVA tasks, including intensity discrimination and gap detection.
- Moderate correlations were found between FD task performance and phonological skills, as well as overall language scores.
Conclusions:
- Children with SLI exhibit specific deficits in frequency discrimination (FD) abilities.
- There is no evidence to support a general NVA deficit or reduced temporal auditory processing in children with SLI.
- FD skills in SLI may be linked to phonological and language development.
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