1/17/2024 0 Comments Auditory sensitivity in babies![]() ![]() For example, children with SLI will fail to use inflectional endings appropriately (“She comb her hair”), they will fail to mark tense (“Yesterday I fall down”), and they show poor understanding of syntactic devices like word order, selecting a picture of a fish eating a man for the sentence “The fish is eaten by the man” (see Hsu and Bishop, 2011). A hallmark of SLI is grammatical difficulties, usually described as difficulties with morpho-syntax (see Leonard, 2014, for a recent overview). Children with SLI have no obvious hearing or neurological impairments, and no apparent prosocial difficulties, yet they fail to acquire language skills at an age-appropriate rate. Specific language impairment (SLI) is a neurodevelopmental disorder of learning that affects the processing and production of spoken language ( Leonard, 2014). These data support a new hypothesis, the “prosodic phrasing” hypothesis, which proposes that grammatical difficulties in SLI may reflect perceptual difficulties with global prosodic structure related to auditory impairments in processing amplitude rise time and duration. Individual differences in processing syllable stress were associated with auditory processing. Both sub-groups with intact IQ showed reduced sensitivity to ART in speech stimuli, but the PPR subgroup also showed reduced sensitivity to sound duration in speech stimuli. Problems with syllable stress and prosodic structure were found for all the group comparisons. ![]() One subgroup, “Pure SLI,” had intact phonology and reading ( N = 16), the other, “SLI PPR” ( N = 15), had impaired phonology and reading. We report data for all the SLI children ( N = 45, IQ varying), as well as for two independent SLI subgroupings with intact IQ. Participants were 45 children with SLI aged on average 9 years and 50 age-matched controls. We also measured auditory processing of ART, rising pitch and sound duration, in both speech (“ba”) and non-speech (tone) stimuli. Here we used two tasks requiring sensitivity to prosodic structure, the DeeDee task and a stress misperception task, to investigate this hypothesis. Linguistically, these perceptual impairments should affect sensitivity to speech prosody and syllable stress. Recent auditory studies have shown impaired sensitivity to amplitude rise time (ART) in children with SLIs, along with non-speech rhythmic timing difficulties. Department of Psychology, Centre for Neuroscience in Education, University of Cambridge, Cambridge, UKĬhildren with specific language impairments (SLIs) show impaired perception and production of spoken language, and can also present with motor, auditory, and phonological difficulties.Ruth Cumming Angela Wilson Usha Goswami * ![]()
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