Re-assessing the perceptual consequences of CV-transition speed
Fritjof Norrelgen1, Francisco Lacerda & Hans Forssberg1
1Neuropediatric Unit, Dep. of Woman and Child Health, Karolinska Institute, Stockholm
Journal of Learning Disabilities, Vol 34 : 359-369.
This study examined temporal resolution of auditory perception (TRAP) in relation to speech perception and phonological working memory in one experiment, and in relation to measures of rapid naming, understanding of grammatical contrasts and phonological awareness, in a second experiment. In the TRAP test, 6- to 9-year-old children discriminated four pairs of two sine tones, 878 Hz and 1350 Hz, presented in blocks with stepwise decreasing interstimulus intervals from 256 ms to 8 ms. In Experiment 1, weak but significant correlations between TRAP and speech perception and phonological working memory were found, as well as a significantly lower TRAP performance by girls. Experiment 2 indicated a significant relation between TRAP and the phonological awareness task. The results give qualified support to the notion of a weak relationship between TRAP and speech perception and language skills among typical children. However, gender differences in TRAP performance, the limited variance explained by the regression models, and the finding that only one of the language parameters correlated with TRAP do not support the notion of a causal relationship between language skills and TRAP. The possibility that TRAP is connected to general neurological maturation rather than specifically to language abilities is discussed.
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