음운장애아동의 지연상황 이름대기 과제에 있어서 음운 정확도

Yim, Dongsun; Munson, Benjamin

ORIGINAL ARTICLE

Commun Sci Disord. 2012;17(2): 187-200.

Dongsun Yim^` , and Benjamin Munson^`

임동선(Dongsun Yim)| 벤자민 먼슨(Benjamin Munson)

ABSTRACT

Background and Objectives
The purposes of this experiment were: (a) to determine whether children with phonological disorder (PD) differ from children with typical language development (TD) in the time-course of lexical access and (b) to explore the factors associated with picture-naming accuracy by children with PD.
Methods
Thirty-eight children consistingof 19 with PD and 19 with TD participated in this study. The children completed experimental tasks including a delayed naming task in which children were presented with pictures that they were instructed to name after a 0 ㎳, 500 ㎳, or 1,000 ㎳ delay interval. Responses atthe 0 ㎳ delay intervalwere presumed to reflect the combined influence of lexical access and post-access processes. Responses at the longer-delay intervals were presumed to primarily reflect post-access processes.
Results
Children with PD produced a higher proportion of phonological errors at all three delay intervals. However, there was not a significant difference in the shorter delay intervals in children with PD. Based on the results of stepwise regression analyses, it was determined that the vocabulary size did not predict any additional variance in naming accuracy. Only the production accuracy of phonemes comprising the nonwords predicted error rates.
Discussion & Conclusion
The findings of this study suggest that children with PD have the same lexical access as children with TD. In other words, the group differences in error rates appeared to be entirely attributable to children’s difficulty producing the phonemes in the pictures’ names. The results discuss the potential underlying reasons for PD including weak phonological representations.