Journal of Child Language最新文献

Monolingual children tend to assume that a word labels only one object, and this mutual exclusivity supports referent selection and retention of novel words. Bilingual children accept two labels for an object (lexical overlap) for referent selection more than monolingual children, but in these previous studies, information about speakers' language backgrounds was minimal. We investigated monolingual and bilingual 4-year-old children's ability to apply mutual exclusivity and lexical overlap flexibly when objects were labelled either by one or two speakers with the same or different language backgrounds. We tested referent selection and retention of word-object mappings. Both language groups performed similarly for mutual exclusivity, were more likely to accept lexical overlap in the two-language than one-language condition, and performance was similar for referent selection and later retention. Monolingual and bilingual children can adapt their word-learning strategies to cope with the demands of different linguistic contexts.

Prediction is a central feature of mature language comprehension, but little is known about how and when it develops. This study investigates whether lexical prediction emerges before seven using a novel, naturalistic cloze task. Five and six-year-old children listened to a storybook and occasionally guessed which word might come next. We selected 180 words from the story that were shown to be more or less predictable in a prior cloze norming task with adults. We found that children frequently guessed the correct word or provided an alternative that was semantically related to the target, demonstrating an ability to use the context to explicitly predict upcoming words. Six-year-olds were more accurate than 5-year-olds. These findings show prediction is present (but still improving) in early childhood, motivating future work on the role of prediction in children's comprehension and learning. Finally, we demonstrate that it is feasible to collect cloze values from children.

Using a priming picture-description, a digital recall and a non-word repetition task, this study tested 18 four- to six-year-old Mandarin-speaking children with Developmental Language Disorder (DLD) and 25 age-matched typically developing (TD) children to examine the performance of children with DLD in producing grammatical aspect and the links of their performance to verbal working memory (VWM). Results indicated that children with DLD performed worse in producing individual aspect markers than TD children, showing better performance on the preverbal zai- than on the post-verbal markers. They showed better performance in producing imperfective than perfective aspect. Heterogeneous performance was noted in aspectual production within the DLD group, but only performance on -guo and perfective aspect significantly correlated with their VWM. Findings highlight the importance of positional and aspectual distinctions in assessment and intervention for Mandarin-speaking children with DLD, and they provide language-specific evidence for cross-linguistic asymmetries in aspect acquisition in language disorders.

This study piloted CHIPUTIL, an automated tool in CLAN for analysing sequential lexical overlap in parent–child conversations. In a sample of 44 dyads (child age M = 1;9), child spontaneous lexical overlap was positively associated with parent imitations and expansions, across the conversation and within sequential turns. Children were more than twice as likely to respond with lexical overlap when parents first produced an imitation or expansion. These findings offer insight into how lexical overlap may unfold in early conversations. We discuss implications of automated coding and future directions in exploring the role of lexical overlap in children’s language development.

Encoding only-type exclusive focus in discourse involves complex computation and integration of knowledge from multiple linguistic domains. We present a comprehensive analysis of syntactic, semantic, prosodic, and discourse contextual features of 864 utterances with only and its Mandarin equivalents zhi(you) produced by Mandarin–English bilingual preschoolers and matched monolinguals (age 2–6, Study 1), and by Mandarin-speaking parents (Study 2), all sampled from naturalistic interactions. The results revealed largely target-like syntactic positioning and semantic association of only and zhi(you) in both languages in the bilinguals, with cross-linguistic influence between only and zhi. Interestingly, the bilingual children, like their Mandarin monolingual peers, employed longer duration but not raised mean pitch to shift the prosodic stress to the intended focus, although both acoustic features, in addition to positional and contextual cues, were instantiated in the focus utterances in the Mandarin parental input, suggesting prolonged development in focus-prosody mapping in children independent of bilingualism.

A growing literature explores the representational detail of infants’ early lexical representations, but no study has investigated how exposure to real-life acoustic-phonetic variation impacts these representations. Indeed, previous experimental work with young infants has largely ignored the impact of accent exposure on lexical development. We ask how routine exposure to accent variation affects 6-month-olds’ ability to detect mispronunciations. Forty-eight monolingual English-learning 6-month-olds participated. Mono-accented infants, exposed to minimal accent variation, detected vowel mispronunciations in their own name. Multi-accented infants, exposed to high levels of accent variation, did not. Accent exposure impacts speech processing at the earliest stages of lexical acquisition.

Deaf and hard-of-hearing (DHH) preschoolers have difficulty comprehending and producing English plural morphology. This study investigated their comprehension and production of the plural at primary-school age using novel words, to better understand their mental representation of plural morphology. Thirty 5- to 9-year-old DHH children and 31 children with normal hearing (NH) completed a two-alternative forced-choice comprehension task and a wug production task. Performance was not significantly poorer for DHH children, though some morphophonological contexts proved challenging for both groups. Performance was correlated with vocabulary size. This suggests that, if DHH children have sufficient vocabulary, they may perform like primary school NH peers in plural comprehension and production.