G4 Doctoral dissertation (monograph)
Familial dyslexia and sound duration in the quantity distinctions of Finnish infants and adults (1998)
Richardson, U. (1998). Familial dyslexia and sound duration in the quantity distinctions of Finnish infants and adults [Doctoral dissertation]. Jyväskylän yliopisto. Studia philologica Jyväskyläensia, 44. http://urn.fi/URN:ISBN:978-951-39-8693-3
JYU authors or editors
Publication details
All authors or editors: Richardson, Ulla
ISBN: 951-39-0175-0
eISBN: 978-951-39-8693-3
Journal or series: Studia philologica Jyväskyläensia
ISSN: 0585-5462
Publication year: 1998
Number in series: 44
Number of pages in the book: 211
Publisher: Jyväskylän yliopisto
Place of Publication: Jyväskylä
Publication country: Finland
Publication language: English
Persistent website address: http://urn.fi/URN:ISBN:978-951-39-8693-3
Publication open access: Not open
Publication channel open access:
Publication is parallel published (JYX): http://urn.fi/URN:ISBN:978-951-39-8693-3
Abstract
sounds into prosodically distinct phonemes by dyslexic adults and their
infants, in the Finnish context. The duration of sounds has a significant role
in Finnish quantity distinctions and the quantity aspect is visibly marked i n
the Finnish orthography. Previous research has shown controversial
evidence on the temporal processing abilities of dyslexics.
In the infant perception experiment a head-tum paradigm was used to
test 6-month old infants' perception of speech stimuli in which the
duration of a stop was varied. There were 89 subjects, half of whom were
infants with high genetic risk for dyslexia (GR+) while the other half were
controls (GR-). The results indicated that the GR+ infants require
significantly longer duration than the GR- infants to shift their perception
from the short to the long quantity category. The same experiment adapted
for adults showed that also adult dyslexics may have a deficiency i n
processing temporal information.
The same adults and infant subjects took part in production
experiments. The results showed that the GR+ infants differed from the
adults more than GR- infants in using durational cues for (C)VCV and
(C)VCCV structures. In particular, the secondary cue in these word
structures appeared to be troublesome for the GR+ infants. Also the dyslexic
adults differed from the control adults in the use of the secondary cue i n
CVCV structures. The findings suggest that there may be a basic temporal
processing deficiency in dyslexics which is apparent early in their
development.
Keywords: Finnish language; dyslexia
Free keywords: kvantiteetti; dyslexia; lapsen kielen kehitys
Contributing organizations
Ministry reporting: Yes
Preliminary JUFO rating: Not rated
