Word learning is a lifelong activity constrained by cognitive biases that people possess at particular points in development. Age of acquisition (AoA) is a psycholinguistic variable that may prove useful toward gauging the relative weighting of different phonological, semantic, and morphological factors at different phases of language acquisition…

Generic sentences (such as "Birds lay eggs") are important in that they refer to kinds (e.g., birds as a group) rather than individuals (e.g., the birds in the henhouse). The present set of studies examined aspects of how generic nouns are understood by English speakers. Adults and children (4- and 5-year-olds) were presented with scenarios about…

Notes young children's fast mapping ability for word and fact learning. Finds children's extension of a new word to novel objects from same category but lack of extension for new facts, as replicated by Waxman and Booth, unsurprising. Poses more interesting question: is word learning done solely through more general cognitive systems or through…

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…

A study of the development of abstract noun definitions in children and adolescents had as its subjects 120 students evenly divided into age groups of 10-, 14-, and 18-year-olds, randomly selected from students scoring in the 40th to 88th percentiles on the Iowa Test of Basic Skills (for 10-year-olds) and the Tests of Achievement and Proficiency…

Students, ages 12, 15, 18, and 23 (n=60 per group), wrote definitions for 16 abstract nouns. Responses were analyzed for Aristotelian style. There was an increasing tendency for students to mention the appropriate category to which a word belongs, core features of the word, and subtle aspects of meaning. (DB)

A study investigated whether children expect color similarity to be less important than form similarity in object label extensions. Twenty 2-year-olds and 20 3-year-olds were asked to sort objects similar in either color or form in two different situations: (1) the "No Label" condition where children were asked to help the puppet put objects that…