Why do infants learn some words earlier than others? Many theories of early word learning focus on explaining how infants map labels onto concrete objects. However, words that are more abstract than object nouns, such as "uh-oh," "hi," "more," "up," and "all-gone," are typically among the first to…

Children learn what words mean from hearing words used across a variety of contexts. Understanding how different contextual distributions relate to the words young children say is critical because context robustly affects basic learning and memory processes. This study examined children's everyday experiences using naturalistic video recordings to…

Previous research has highlighted the difficulty that infants have in learning to use color words. Even after acquiring the words themselves, infants are reported to use them incorrectly, or overextend their usage. We tested 146 infants from 5 different age groups on their knowledge of 6 basic color words, "red", "green",…

English-learning infants attend to lexical stress when learning new words. Attention to lexical stress might be beneficial for word learning by providing an indication of the grammatical class of that word. English disyllabic nouns commonly have trochaic (strong-weak) stress, whereas English disyllabic verbs commonly have iambic (weak-strong)…

Nouns form the first building blocks of children's language but are not consistently modified by other words until around 2.5 years of age. Before then, children often combine their nouns with gestures that indicate the object labeled by the noun, for example, pointing at a bottle while saying "bottle." These gestures are typically…

Research based on naturalistic and checklist methods has revealed differences between English and Chinese monolingual children in their trajectories of learning nouns and verbs. However, studies based on controlled laboratory designs (e.g., Imai et al., 2008) have yielded a more mixed picture. Guided by a multidimensional view of word learning (in…

The present article investigates spatial- and social-cognitive processes in toddlers' mapping of concepts to real-world events. In 2 studies we explore how event segmentation might lay the groundwork for extracting actions from the event stream and conceptually mapping novel verbs to these actions. In Study 1, toddlers demonstrated the ability to…

In 3 experiments, 9-month-old infants' expectations for what distinct count noun labels refer to were investigated. In Experiment 1, a box was opened to reveal 2 objects inside during familiarization: either 2 identical objects or 2 different objects. Test trials followed the same procedure, except before the box was opened, the contents were…

Children performed well on tasks involving pictures regardless of whether the pictures were named. Performance on atypical pictures was better when category labels were provided than when labels were not provided. A control study demonstrated that children ignored labels when they named a transient, as opposed to a stable, category. (RH)

Challenges Gentner's (1982) claim that nouns are universally predominant in children's early vocabularies, noting that when a conservative method of counting nouns was used, 9 out of 10 22-month-old monolingual Mandarin-speaking children produced more verbs or action words than nouns or object labels in their naturalistic speech. (MDM)

This study analyzed data from a diary study of a child's lexical development. Correct forms and errors in the use of the plural morpheme were recorded from 18 to 30 months. Morphology was acquired before syntax, and there was evidence for a syntactic definition of noun by the age of 20 months. (BC)