The role of vision in the acquisition of words: Vocabulary development in blind toddlers
The role of vision in the acquisition of words: Vocabulary development in blind toddlers
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DOI：
10.1111/desc.13475
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发表时间：
2024-01-16
影响因子：
3.7
通讯作者：
Bergelson，Elika
中科院分区：
文献类型：
--
作者：
Campbell，Erin;Casillas，Robyn;Bergelson，Elika
视觉在推动早期词汇产生中的作用是什么？为了回答这个问题，我们评估了对先天性失明儿童（N= 40，平均年龄= 24个月[R：7-57个月]）进行的父母报告词汇问卷，并将他们的生产性词汇的大小和内容与大规模正常视力儿童（N= 6574）进行了比较。我们发现，平均而言，盲人儿童相对于视力正常的儿童表现出大约半年的词汇延迟，其中存在相当大的差异。然而，盲童与有视力儿童的词汇内容在词汇长度、词性、语义类别、具体性、交互性和知觉模态方面的差异并不显著。在更细粒度的层面上，我们还发现单词的感知属性与儿童的感知能力相交。我们的研究结果表明，虽然缺乏视觉输入可能会使词汇发展更加困难，但早期产出性词汇的内容在很大程度上对感知访问的差异具有弹性。（没有其他诊断）显示平均7.5个月的产出性词汇延迟，变异性很大。（7-57个月），词汇延迟随年龄增长而扩大。盲童和有视力儿童的早期词汇包含相似的词长、词性、语义类别和感知模态的分布。盲童（但没有视力儿童）更可能说视觉词，这些词也可以通过其他感官体验。
What is vision's role in driving early word production? To answer this, we assessed parent‐report vocabulary questionnaires administered to congenitally blind children (N= 40, Mean age = 24 months [R: 7–57 months]) and compared the size and contents of their productive vocabulary to those of a large normative sample of sighted children (N= 6574). We found that on average, blind children showed a roughly half‐year vocabulary delay relative to sighted children, amid considerable variability. However, the content of blind and sighted children's vocabulary was statistically indistinguishable in word length, part of speech, semantic category, concreteness, interactiveness, and perceptual modality. At a finer‐grained level, we also found that words’ perceptual properties intersect with children's perceptual abilities. Our findings suggest that while an absence of visual input may initially make vocabulary development more difficult, the content of the early productive vocabulary is largely resilient to differences in perceptual access.Research HighlightsInfants and toddlers born blind (with no other diagnoses) show a 7.5 month productive vocabulary delay on average, with wide variability.Across the studied age range (7–57 months), vocabulary delays widened with age.Blind and sighted children's early vocabularies contain similar distributions of word lengths, parts of speech, semantic categories, and perceptual modalities.Blind children (but not sighted children) were more likely to say visual words which could also be experienced through other senses.