Two experiments showed two-year-olds pairs of videotaped actions, one familiar and one novel, and asked them to select referents of novel verbs. For actions not involving objects, children tended to select the novel action over the familiar one in each of four experiments. For actions involving objects, novel actions were chosen more often than…

A study of two year olds investigated the nature and development of children's early productivity with verb-argument structure and verb morphology. Results indicated that the children showed no signs of productive verb morphology, but they did use newly learned verbs in some creative ways involving nounlike uses and the appending of locatives.…

Two experiments examined toddlers' noun vocabularies and interpretations of names for solid and non-solid items. Results indicated that one side of the solidity-syntax-category organization mapping was favored. Seventeen- to 33-month olds do not systematically generalize names for solid things by shape similarity until they already know many…