The present study aimed at investigating the contextual stability, the contextual continuity and the concurrent associations between maternal measures (general language, communicative functions and mind-mindedness) and child measures (total number of word types and tokens) in two different contexts, free-play and mealtime. To this purpose, the interactions occurring between 25 mothers and their 16-month-old children in each context were video-recorded, transcribed and later coded for the selected measures. Significant contextual stability was observed in the mothers’ production of general language measures (total number of utterances, total number of words and MLU), in the children's production of word types and tokens, and in some communicative functions (Tutorial, Control and Asynchronous). No contextual stability was found for the mothers’ production of attuned mind-related comments. For continuity, both mothers and children produced more utterances and words in the free-play than in the mealtime context; the production of attuned mind-related comments and the use of the Control function were also more frequent in the free-play context. Lastly, the analysis of the concurrent correlations indicated that, especially in the mealtime context, the number of words produced by children was positively associated with the number of words produced by mothers and by their use of the Tutorial and Didactic functions, but negatively associated with their use of the Control function. The mothers’ production of attuned mind-related comments bore no relation with children's expressive language. Similarities and differences with previous findings are discussed.

本研究旨在调查两种不同语境下的语境稳定性、语境连续性和母性测量（一般语言、交际功能和思维意识）和儿童测量（词类型和标记的总数）之间的并发关联，自由-玩耍和用餐时间。为此，25 名母亲和她们 16 个月大的孩子在每种情况下发生的互动被录像、转录，然后为选定的措施编码。在母亲的一般语言测量（话语总数、单词总数和 MLU）的产生、孩子的单词类型和标记的产生以及一些交际功能（教程、控制和异步）中观察到显着的上下文稳定性. 没有发现母亲产生与心智相关的评论的语境稳定性。为了连续性，母亲和孩子在自由游戏中比在用餐时间产生更多的话语和词语；在自由游戏环境中，产生协调的与思维相关的评论和控制功能的使用也更加频繁。最后，对并发相关性的分析表明，特别是在进餐时间，孩子产生的单词数量与母亲产生的单词数量以及她们使用教程和教学功能呈正相关，但与他们使用控制功能。母亲产生的与心智相关的和谐评论与孩子的表达语言无关。