Rapid gains in speed of verbal processing by infants in the 2nd year
Rapid gains in speed of verbal processing by infants in the 2nd year
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DOI：
10.1111/1467-9280.00044
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发表时间：
1998-05-01
影响因子：
8.2
通讯作者：
McRoberts, GW
中科院分区：
文献类型：
--
作者：
Fernald, A;Pinto, JP;McRoberts, GW
婴儿在2岁时语言能力显著提高对言语产生早期发展的研究表明，词汇量在15个月左右开始迅速扩大。在此期间，婴儿在理解口语方面也取得了令人印象深刻的进步。我们研究了年龄在15到24个月的婴儿识别单词的时间过程，跟踪他们在看到熟悉的口语单词时的眼球运动。言语处理的速度和效率在第二年显著提高：尽管15个月大的婴儿直到说出目标词后才确定注意力集中在相关图片上，但24个月大的婴儿明显更快;在说出单词结束前将目光转移到相关图片上。2岁的时候。儿童正在向成人的高效表现发展，基于不完整的声学信息对单词进行决策。
Infants improve substantially in language ability during their 2nd year Reseal ch on the early development of speech production shows that vocabulary begins to expand rapidly around the age of IS months. During this period infants also make impressive gains in understanding spoken language. We examined the time course of word recognition in infants ages 15 to 24 months, tracking their eye movements as they looked at pictures in response to familiar spoken words. The speed and efficiency of verbal processing increased dramatically over the 2nd year: Although 15-month-old infants did not orient to the con-ect picture until after the target word was spoken, 24-month-olds were significantly faster; shifting their gaze to the con-ect picture before the end of the spoken word. By 2 years of age. children are progressing toward the highly efficient performance of adults, making decisions about words based an incomplete acoustic information.