representation in SLI children
informing the centre's future research agenda, is recent work on phonological
representations in children with SLI and their first-degree relatives.
This work, in collaboration with John Harris, examines phonological
structure using an "element" phonology approach (Harris, 1994), and
has required the creation of a test of phonological structure using
a non-word repetition methodology based on linguistic theory, whereby
non-words systematically vary in prosodic and segmental structural complexity.
This new assessment in which complexity is systematically varied according
to the parameters of prosodic or segmental structure enables us to go
beyond a correct-incorrect analysis to determine where a child's phonological
system is breaking down with respect to speech elements. Within the
adopted approach, these elements have direct acoustic correlates in
the speech stream, thereby enabling us to link this work to our investigations
of auditory perception.
further advance knowledge about the development and nature of phonological
representation in language impaired children, we are integrating phonological
investigations of both production and perception with those examining
the acoustic elements of speech. This project, planned to be conducted
in collaboration with Profs Stuart Rosen, John Harris and Peter Jusczyk,
benefited from many discussions with Peter Jusczyk and will continue
with Rosen, Harris and Dr
Franck Ramus. The planned work addresses many issues pertinent
to Human Communication Science, including SLI, dyslexia, phonological
development, auditory processing and speech perception.
date, the phonological investigations have produced a test of non-words
that is based on spoken speech and its acoustic relation to the speech
stream, and has proved to be a sensitive measure of phonological structure
This test is currently being used to assess adult dyslexic subjects
and to identify residual phonological deficits in SLI subjects
and their relatives in the Scottish Human Genetics project.
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