Previous studies report that children use color words haphazardly before acquiring conventional, adult-like meanings. The most common explanation for this is that children do not abstract color as a domain of linguistic meaning until several months after they begin producing color words, resulting in a stage during which they produce but do not…

Adults find negative sentences difficult to process, but an informative context can facilitate processing substantially, suggesting that much of this difficulty may come from the pragmatics of negation. Are children sensitive to the pragmatics of negation as well? Although children perform poorly on many tests of negation comprehension, we argue…

Children who rapidly recognize and interpret familiar words typically have accelerated lexical growth, providing indirect evidence that lexical processing efficiency (LPE) is related to word-learning ability. Here we directly tested whether children with better LPE are better able to learn novel words. In Experiment 1, 17- and 30-month-olds were…

Emergent literacy skills develop from a child's experiences with spoken language in social interactions, written words through storybook reading, and opportunities to interact with print in the environment. These emergent literacy experiences provide a foundation for conventional literacy skills. A congenital visual impairment (that is, blindness…

Research Findings: This study investigated the prevalence of pedagogical questions posed by 27 early childhood educators as they interacted with infants in each of two naturally-occurring contexts: book-focused interactions and educator mediated play. The pedagogical questions expressed by educators to infants were coded as "confirm"…

This study aims to enhance our knowledge of the associations between the quality of the language-learning environment in toddler childcare groups and children's vocabulary development from age 3 to age 5. Participants were 1,131 children (48% girls; age at T1 assessment: M = 35.5 months, SD = 2.7; age at T2 assessment: M = 60.3 months, SD = 1.4)…

There have been many studies examining the differences between infant-directed speech (IDS) and adult-directed speech (ADS). However, investigations asking whether mothers clarify vowel articulation in IDS have reached equivocal findings. Moreover, it is unclear whether maternal speech clarification has any effect on a child's developing language…

In a preferential looking paradigm, we studied how children's looking behavior and pupillary response were modulated by the degree of phonological mismatch between the correct label of a target referent and its manipulated form. We manipulated degree of mismatch by introducing one or more featural changes to the target label. Both looking behavior…

In this study, we explored the role of emerging inhibitory control skills in language acquisition in 62 typically developing children aged 24-32 months and investigated whether early inhibitory control skills are longitudinally associated with language outcome. Specifically, we focused on two different inhibitory processes that develop…

The article focuses on the omission of locative prepositions in child Russian. We report on two experiments: a production task and a comprehension task. Results from the elicited production task show that the majority of 2- and a minority of 3-year-olds (i) omit locative prepositions at nonnegligible rates, and (ii) do not conform to targetlike…

Infants invite those caring for them to join as companions on an incredible journey. "Infant and Toddler Development from Conception to Age 3" is a helpful guide to that journey. Each chapter taps a distinct area of research to shed light on babies' biological expectations for care and their amazing competence as active participants in…

Purpose: The objective of this study was to compare vocabulary size and composition in 2-year-olds learning Polish or English as measured by the Language Development Survey (LDS; Rescorla, 1989). Method: Participants were 199 Polish toddlers (M = 24.14 months, SD = 0.35) and 422 U.S. toddlers (M = 24.69 months, SD = 0.78). Results: Test-retest…

The purpose of this study was to determine if children acquire grammatical case as a unified system or in a piecemeal fashion. In English language acquisition, many children make developmental errors in marking case on subject position pronouns (e.g., "Me" do it, "Him" like it). It is unknown whether children who produce…

Two experiments investigated two-year-olds' retention and generalization of novel words across short and long time delays. Specifically, retention of newly learned words and generalization to novel exemplars or novel contexts were tested 1 min or 1 week after learning. Experiment 1 revealed successful retention as well as successful generalization…

This study set out to examine whether shyness, an aversion to novelty and unfamiliar social situations, can affect the processes that underlie early word learning. Twenty-four-month-old children (n = 32 ) were presented with sets of one novel and two familiar objects, and it was found that shyer children were less likely to select a novel object…