2세 말늦은 아동의 의미 범주화 특성: 분류학적 가정을 중심으로
Semantic Categorization in Korean Late-talker (24-35months): Focus on Using Taxonomic Assumption
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초록
본 연구는 표현어휘가 부족하다고 알려진 말 늦은 아동이 다양한 의미범주 수준에서 분류학적 가정을 어떻게 적용하는지 살펴보고자 하였다. 연구대상은 24-35개월 말 늦은 아동 20명과 또래 일반아동 26명이었다. 연구과제로서 기본수준 및 상위수준에서 제시된 그림자극을 보고 주제적 관련 그림과 분류적 관련 그림의 두 개 자극 중에서 새단어(novel word) 제시 유무에 따라 어떤 자극을 선택하는지 살펴보았다. 그 결과 말 늦은 아동은 기본 범주 및 상위 범주 모두에서 새로운 단어 제시 유무와 상관없이 분류적 관련 자극을 선택하는 정도가 일반아동보다 유의미하게 낮았다. 반면, 일반아동의 경우 상위 범주에서 단어가 제시되었을 때 분류적 관련 자극을 선택하는 정도가 단어 없는 조건보다 유의미하게 높았다. 이러한 결과에 근거 할 때 말 늦은 아동은 또래 일반아동과 비교하여 어휘습득에 있어서 분류학적 가정을 사용하는 것이 제한되어 있으며, 특히 상위 범주보다 기본범주에서 그러한 제한은 더욱 크다는 사실을 확인하였다.
Abstract
This study aims to examine how late-talkers who are known to lack expressive vocabulary apply taxonomic assumptions at various semantic category levels. The participants were 20 late-talkers between 25 and 35 months in age and 26 general peers. At the basic semantic level and the superordinate semantic level, to observes taxonomic assumptions, we examined which stimulus was selected based on the presence or absence of a novel word among two stimuli (thematic and taxonomic). Late-talkers were found to be limited in using taxonomic assumptions at both the basic semantic level and the superordinate semantic level, regardless of the presence of novel words. On the other hand, in the case of general children, when the novel word was presented in the superordinate semantic level, the taxonomic stimulus was significantly higher than the wordless condition, so that the taxonomic assumption was applied. Based on these results, late-talkers were found to have limited use of taxonomic assumptions in vocabulary acquisition with regard to their peers, especially at the basic level compared to the superordinate semantic level.
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