Results from these two studies show that fast mapping--gaining information about a word from how it is used in a sentence, what words it is contrasted with, and other factors--can be used successfully by children two to four years old to form quick and rough hypotheses about the meaning of a word. (PCB)

Three experiments investigated whether preschoolers attend to actions or object when learning a novel verb. Findings showed that children learning nouns in the context of novel, moving objects attended exclusively to appearances of objects. Children learning verbs attended equally to appearances and motions. With familiar objects, children…

Examined the use by children of the Novel Name-Nameless Category principle, under the framework that lexical principles are acquired in a developmental sequence. Results indicated that the particular principle was not available at the start of lexical acquisition but that exhaustive categorization ability and a vocabulary spurt occur…