This study explored responsive and linguistic parent input features during parent-child interactions and investigated how four input categories related to children’s production of diverse, simple sentences. Of primary interest was parent use of responsive, simple declarative input sentences. Responsive and linguistic features of parent input to 20 typically developing toddlers at 1;9 were coded during play in a laboratory playroom, then classified into four input categories: responsive, declarative, responsive declarative, and neither responsive nor simple declarative. The percentage of each input category was related to child sentence diversity at 2;6 using Spearman correlations. Parent use of responsive declarative and declarative utterances were both rare. Responsive input was positively correlated with child sentence diversity, and the neither category was negatively correlated with child sentence diversity. The findings provide new support for the importance of balanced conversational turns. Implications for defining both how input is delivered and its linguistic content are discussed.

这项研究探讨了亲子互动过程中父母的响应和语言输入特征，并研究了四种输入类别与儿童生成多样化、简单句子的关系。主要兴趣是家长使用响应式、简单的陈述性输入句子。在实验室游戏室玩耍期间，对 20 个典型发育中的 1;9 幼儿的父母输入的响应和语言特征进行编码，然后分为四个输入类别：响应式、声明式、响应式声明式、既不响应式又不简单声明式。使用 Spearman 相关性，每个输入类别的百分比与 2;6 的儿童句子多样性相关。家长使用回应性陈述和陈述性话语的情况都很罕见。响应性输入与儿童句子多样性呈正相关，而两者均不与儿童句子多样性呈负相关。这些发现为平衡对话轮流的重要性提供了新的支持。讨论了定义输入的传递方式及其语言内容的含义。