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Abstract

Purpose: Nonword repetition (NWR) has been described as a clinical marker of Developmental Language Disorder (DLD), as NWR tasks consistently discriminate between DLD and typical development (TD) cross-linguistically, with Cantonese the only reported exception (Stokes et al., 2006). This study re-examines whether NWR is able to generate TD/DLD group differences in Cantonese-speaking children, by reporting on a novel set of NWR stimuli which take into account factors known to affect NWR performance and group differentiation, including lexicality, sub-lexicality, length and syllable complexity.

Method: Sixteen Cantonese-speaking children with DLD and sixteen age-matched, TD children repeated two sets of High-Lexicality nonwords, where all constituent syllables are morphemic in Cantonese but meaningless when combined; and one set of Low-Lexicality nonwords, where all constituent syllables are non-morphemic. Low-Lexicality nonwords were further classified on sub-lexicality, in terms of consonant-vowel (CV) combination attestedness (whether or not CV combinations in nonword syllables occur in real Cantonese words).

Results: Children with DLD scored significantly below their TD peers. Effect sizes showed that High-Lexicality nonwords and nonword syllables with attested CV combinations offered the greatest TD/DLD group differentiation. Nonword length and syllable complexity did not affect TD/DLD group differentiation.

Conclusions: NWR can capture TD/DLD group differences in Cantonese-speaking children. Lexicality and sub-lexicality effects must be considered in designing NWR stimuli for TD/DLD group differentiation. Future studies should replicate the present study on a larger sample size, a younger population, and examine diagnostic accuracy of this NWR test.

Publication Type:	Article
Additional Information:	This article has been accepted for publication in Journal of Speech, Language, and Hearing Research. The final published version will be available online at: https://pubs.asha.org/journal/jslhr
Publisher Keywords:	Nonword Repetition; Developmental Language Disorder; Cantonese Chinese
Subjects:	R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry R Medicine > RJ Pediatrics > RJ101 Child Health. Child health services
Departments:	School of Health & Psychological Sciences School of Health & Psychological Sciences > Language & Communication Science
Related URLs:	Publisher
SWORD Depositor:	Symplectic Administrator

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