Mervis C B, Bertrand J
Department of Psychology, Emory University, Atlanta, GA 30322, USA.
J Child Lang. 1995 Jun;22(2):461-8. doi: 10.1017/s0305000900009880.
Vocabulary development of three children (aged 1;6-1;8 at the start of the study) who had not begun to evidence a vocabulary spurt even though their productive vocabularies already included well over 50 words was followed to determine if these children eventually would have a vocabulary spurt. All three children evidenced a spurt, beginning at a mean productive vocabulary size of 112 words. The vocabulary spurt occurred at about the same time as the children first demonstrated the ability to sort objects exhaustively and to fast map new object names. Results are discussed in the context of Goldfield & Reznick's (1990; Reznick & Goldfield, 1992) argument that a substantial proportion of children never evidence a vocabulary spurt.
对三名儿童（研究开始时年龄为1岁6个月至1岁8个月）的词汇发展情况进行了跟踪，这些儿童尽管其产出性词汇已经超过50个，但尚未开始出现词汇激增现象，以确定这些儿童最终是否会出现词汇激增。所有三名儿童都出现了激增，开始时的平均产出性词汇量为112个单词。词汇激增发生的时间与儿童首次表现出能够详尽地对物体进行分类并快速掌握新物体名称的能力的时间大致相同。研究结果将在戈德菲尔德和雷兹尼克（1990年；雷兹尼克和戈德菲尔德，1992年）的观点背景下进行讨论，即相当一部分儿童从未出现过词汇激增现象。
