Recent research has established that contrast can exert a powerful effect on early word learning. This study examined the role of contrast in young children's ability to learn proper names. Preschoolers heard a novel word for an unfamiliar stuffed animal in the presence of a second stuffed animal of either the same or a different kind.…

In two experiments, one hundred ninety-two 3-year-olds, 4-year-olds, and adults heard a novel word for a target object and then were asked to extend the label to one of two test objects, one matching in shape-based object category (the shape match) and the other matching in a property other than shape (the property match). We independently…

In 4 experiments, we examined 16- and 20-month-old infants' understanding of proper names and count nouns. In each experiment, infants were taught a novel word modeled linguistically as either a proper name (e.g., "DAXY") or a count noun (e.g., "a DAXY") for a stuffed animal shown on a puppet stage. This animal was moved to a new location on the…

In Study 1, English-speaking 3- and 4-year-olds heard a novel adjective used to label one of two objects and were asked for the referent of a different novel adjective. Children were more likely to select the unlabeled object if the two adjectives appeared prenominally (e.g., "a very DAXY dog") than as predicates (e.g., "a dog that is very DAXY").…

Preschoolers learned a novel adjective or count noun for an object and chose between two objects that shared an object kind or a material kind property with the target object. Found that, in interpreting adjectives, four-year-olds were more likely to choose the object sharing material kind with the target if the target was familiar than if it was…

Two studies addressed the relative strengths of object kind bias and syntactic knowledge in 2-year-olds' inductions of word meaning. The study looked at children's interpretations of novel proper names for familiar and unfamiliar objects. In each study, 10 children were assigned to each of 2 conditions (familiar and unfamiliar) and shown 2 cats…

Four experiments examined three- and four-year olds' interpretations of novel words applied to familiar objects in the sentence frame "This Y is X," where X is a novel word and Y is a familiar count noun. Results indicated that preschoolers understood that the novel words were either proper names or adjectives/mass nouns. (MDM)

Fourteen mothers and their children participated in a storybook reading session in which the mothers taught their children both a basic-level count noun and a situation-restricted count noun for a series of object drawings. Analysis of mothers' spontaneous teaching strategies revealed that they typically taught a basic-level count noun before a…

Three experiments examined preschoolers' and adults' understanding of distinctive semantic functions of adjectives and count nouns. Found that 4-year olds and adults, but not 3-year olds, who heard the adjective version (e.g., "a blue bird") were more likely than those who heard the count noun version ("a bluebird") to choose…

Examined in six experiments toddlers' use of syntactic cues to learn proper names and count nouns. Found that by 24 months, both girls and boys were significantly more likely to select a labeled object if they had heard a proper name than if they had heard a count noun. At 20 months, neither girls nor boys demonstrated this effect. (Author/KB)