Verb-marking errors such as she play football and daddy singing are a hallmark feature of English-speaking children's speech. We investigated the proposal that these errors are input-driven errors of commission arising from the high relative frequency of subject + unmarked verb sequences in well-formed child-directed speech. We tested this proposal via a preregistered corpus analysis and asked at what level the effects occur: Is it the relative frequency of specific subject + unmarked verb sequences in the input that is important, or is it simply that verbs become entrenched, such that their frequency of appearance with any third person singular subject accounts for errors? We found that the best predictor of children's verb-marking errors is the relative frequency of unmarked forms of specific subject + verb sequences. Our results supported the proposal that children's apparent omissions of certain grammatical morphemes are in fact input-driven errors of commission and provided insight into the mechanisms by which this occurs.

中文翻译：

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幼儿的动词标记错误是通过格式良好的儿童导向言语中未变形序列的相对频率来预测的：​​预先注册的语料库分析

诸如“她踢足球”和“爸爸唱歌”之类的动词标记错误是英语儿童言语的一个标志性特征。我们调查了这样的建议：这些错误是输入驱动的委托错误，是由于在格式良好的儿童导向语音中主语+未标记动词序列的相对频率较高而引起的。我们通过预先注册的语料库分析测试了这个提议，并询问了影响发生的程度：输入中特定主语+未标记动词序列的相对频率是否重要，或者仅仅是动词变得根深蒂固，以至于它们的频率任何第三人称单数主体的出现会导致错误吗？我们发现，儿童动词标记错误的最佳预测因素是特定主语+动词序列的未标记形式的相对频率。我们的结果支持这样的观点，即儿童对某些语法语素的明显遗漏实际上是输入驱动的委托错误，并提供了对这种情况发生的机制的深入了解。