Danielle Matthews

The effect of perceptual availability and prior discourse on young children's use of referring expressions

Choosing appropriate referring expressions requires assessing whether a referent is “available” to the addressee either perceptually or through discourse. In Study 1, we found that 3- and 4-year-olds, but not 2-year-olds, chose different referring expressions (noun vs. pronoun) depending on whether their addressee could see the intended referent or not. In Study 2, in more neutral discourse contexts than previous studies, we found that 3- and 4-year-olds clearly differed in their use of referring expressions according to whether their addressee had already mentioned a referent. Moreover, 2-yearolds responded with more naming constructions when the referent had not been mentioned previously. This suggests that, despite early social–cognitive developments, (a) it takes time to master the given/new contrast linguistically, and (b) children understand the contrast earlier based on discourse, rather than perceptual context.

Three-year-olds are sensitive to semantic prominence during online language comprehension: A visual world study of pronoun resolution

Recent evidence from adult pronoun comprehension suggests that semantic factors such as verb transitivity affect referent salience and thereby anaphora resolution. We tested whether the same semantic factors influence pronoun comprehension in young children. In a visual world study, 3-year-olds heard stories that began with a sentence containing either a high or a low transitivity verb. Looking behaviour to pictures depicting the subject and object of this sentence was recorded as children listened to a subsequent sentence containing a pronoun. Children showed a stronger preference to look to the subject as opposed to the object antecedent in the low transitivity condition. In addition there were general preferences (1) to look to the subject in both conditions and (2) to look more at both potential antecedents in the high transitivity condition. This suggests that children, like adults, are affected by semantic factors, specifically semantic prominence, when interpreting anaphoric pronouns.

Two- and four-year-olds learn to adapt referring expressions to context: Effects of distracters and feedback on referential communication

Children often refer to things ambiguously but learn not to from responding to clarification requests. We review and explore this learning process here. In Study 1, eighty-four 2- and 4-year-olds were tested for their ability to request stickers from either (a) a small array with one dissimilar distracter or (b) a large array containing similar distracters. When children made ambiguous requests, they received either general feedback or specific questions about which of two options they wanted. With training, children learned to produce more complex object descriptions and did so faster in the specific feedback condition. They also tended to provide more information when requesting stickers from large arrays. In Study 2, we varied only distracter similarity during training and then varied array size in a generalization test. Children found it harder to learn in this case. In the generalization test, 4-year-olds were more likely to provide information (a) when it was needed because distracters were similar to the target and (b) when the array size was greater (regardless of need for information). We discuss how clear cues to potential ambiguity are needed for children to learn to tailor their referring expression to context and how several cues of heuristic value (e.g., more distracters > say more) can promote the efficiency of communication while language is developing. Finally, we consider whether it would be worthwhile drawing on the human learning process when developing algorithms for the production of referring expressions.

Pronoun co-referencing errors: Challenges for generativist and usage-based accounts

Abstract This study tests accounts of co-reference errors whereby children allow “Mama Bear” and “her” to co-refer in sentences like “Mama Bear is washing her” (Chien and Wexler, Language Acquisition 1: 225–295, 1990). 63 children aged 4;6, 5;6 and 6;6 participated in a truth-value judgment task augmented with a sentence production component. There were three major finding: 1) contrary to predictions of most generativist accounts, children accepted co-reference even in cases of bound anaphora e.g., “Every girl is washing her” 2) contrary to Thornton and Wexler (Principle B, VP Ellipsis and Interpretation in Child Grammar, The MIT Press, 1999), errors did not appear to occur because children understood referring expressions to be denoting the same person in different guises 3) contrary to usage-based accounts, errors were less likely in sentences that contained lower as opposed to higher frequency verbs. Error rates also differed significantly according to pronoun type (“him”, “her”, “them”). These challenging results are discussed in terms of possible processing explanations.

Supporting Early Vocabulary Development: What Sort of Responsiveness Matters?

Maternal responsiveness has been positively related with a range of socioemotional and cognitive outcomes including language. A substantial body of research has explored different aspects of verbal responsiveness. However, perhaps because of the many ways in which it can be operationalized, there is currently a lack of consensus around what type of responsiveness is most helpful for later language development. The present study sought to address this problem by considering both the semantic and temporal dimensions of responsiveness on a single cohort while controlling for level of parental education and the overall amount of communication on the part of both the caregiver and the infant. We found that only utterances that were both semantically appropriate and temporally linked to an infant vocalization were related to infant expressive vocabulary at 18 mo.

Children’s Production of Unfamiliar Word Sequences Is Predicted by Positional Variability and Latent Classes in a Large Sample of Child-Directed Speech

We explore whether childrens willingness to produce unfamiliar sequences of words reflects their experience with similar lexical patterns. We asked children to repeat unfamiliar sequences that were identical to familiar phrases (e.g., A piece of toast) but for one word (e.g., a novel instantiation of A piece of X, like A piece of brick). We explore two predictions-motivated by findings in the statistical learning literature-that children are likely to have detected an opportunity to substitute alternative words into the final position of a four-word sequence if (a) it is difficult to predict the fourth word given the first three words and (b) the words observed in the final position are distributionally similar. Twenty-eight 2-year-olds and thirty-one 3-year-olds were significantly more likely to correctly repeat unfamiliar variants of patterns for which these properties held. The results illustrate how childrens developing language is shaped by linguistic experience.

French children's use and correction of weird word orders: A constructivist account

Using the weird word order methodology (Akhtar, 1999), we investigated childrens understanding of SVO word order in French, a language with less consistent argument ordering patterns than English. One hundred and twelve French children (ages 2; 10 and 3; 9) heard either high or low frequency verbs modelled in either SOV or VSO order (both ungrammatical). Results showed that: (1) children were more likely to adopt a weird word order if they heard lower frequency verbs, suggesting gradual learning; (2) children in the high frequency conditions tended to correct the ungrammatical model they heard to the closest grammatical alternative, suggesting different models activated different grammatical schemas; and (3) children were less likely to express the object of a transitive verb than were English children in an equivalent study, suggesting object expression is more difficult to master in French, perhaps because of its inconsistency in the input. These findings are discussed in the context of a usage-based model of language acquisition.

Hearing relative clauses boosts relative clause usage (and referential clarity) in young Turkish language learners

On account of both their functional and their morphosyntactic characteristics, relative clauses are often viewed as indicators of complexity in child language. Morphosyntactic properties of Turkish make use of particularly arduous relative clauses in spontaneous early discourse. A matching sticker selection task was used to determine whether Turkish-learning 3- and 4-year-olds can be trained to use subject relative clauses and uniquely identifying constructions. Upon their selection of the accurate sticker, the children were exposed to relative clause constructions (relative clause condition), sentences with demonstrative pronouns (demonstrative noun phrase condition), or a general approval (positive feedback condition). The number of relative clauses increased from pretest to posttest only in the relative clause condition; the rate of using adequately discriminating forms increased in all the three conditions, albeit with a steeper increase in the relative clause condition. The results are discussed in the framework of both structural and pragmatic priming.

Encouraging 5-year olds to attend to landmarks: a way to improve children's wayfinding strategies in a virtual environment

Wayfinding is defined as the ability to learn and remember a route through an environment. Previous researchers have shown that young children have difficulties remembering routes. However, very few researchers have considered how to improve young childrens wayfinding abilities. Therefore, we investigated ways to help children increase their wayfinding skills. In two studies, a total of 72 5-year olds were shown a route in a six turn maze in a virtual environment and were then asked to retrace this route by themselves. A unique landmark was positioned at each junction and each junction was made up of two paths: a correct path and an incorrect path. Two different strategies improved route learning performance. In Experiment 1, verbally labeling on-route junction landmarks during the first walk reduced the number of errors and the number of trials to reach a learning criterion when the children retraced the route. In Experiment 2, encouraging children to attend to on-route junction landmarks on the first walk reduced the number of errors when the route was retraced. This was the first study to show that very young children can be taught route learning skills. The implications of our results are discussed.

Individual Differences in Children's Pragmatic Ability: A Review of Associations with Formal Language, Social Cognition, and Executive Functions.

ABSTRACT Children vary in their ability to use language in social contexts and this has important consequences for wellbeing. We review studies that test whether individual differences in pragmatic skill are associated with formal language ability, mentalizing, and executive functions in both typical and atypical development. The strongest and most consistent associations found were between pragmatic and formal language. Additional associations with mentalizing were observed, particularly with discourse contingency and irony understanding. Fewer studies considered executive function and evidence is mixed. To make progress, high-quality studies of specific pragmatic skills are needed to test mechanistic models of development. We propose six goals for future research: (1) developing an empirically based taxonomy of pragmatic skills; (2) establishing which skills matter most for everyday functioning; (3) testing specific hypotheses about information processing; (4) augmenting measures of individual differences; (5) considering a broader set of psychological associates; and (6) employing statistical tools that model the nested structure of pragmatics and cognition.