Two-year-olds use the sentence structures verbs appear in--"subcategorization frames"--to guide verb learning. This is syntactic bootstrapping. This study probed the developmental origins of this ability. The structure-mapping account proposes that children begin with a bias toward one-to-one mapping between nouns in sentences and participant…

Preschoolers interpreted mental verbs with respect to their mental state in contrast to external state. These children were nontheless ignorant of definitive distinctions between the mental verbs, completely confusing cases of remembering, knowing, and guessing. (Author/RH)

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…