The development of young children's awareness of the word as a unit of spoken language

Young children's awareness of the word as a unit of spoken language was investigated in a series of five experiments that required children aged from 4 to 7 years to segment spoken language strings into words. The results of the first three experiments suggest that young children have considerable success in segmenting spoken language materials, regardless of the grammaticality of the strings, and regardless of the grammatical form class, plurality, or syllabic length of the component words. The basis of such successful segmentation ability was considered further in a fourth experiment, which indicated that children may use stress as a basis of response. A fifth experiment therefore manipulated syllabic stress and morphemic structure to determine what response strategies are employed by children of different ages in segmenting speech. The results suggest that 4- to 5-year-old children respond primarily on the basis of acoustic factors such as stress, whereas somewhat older 5- to 6-year-old children respond on the basis of (unbound) morphemic structure. By age 7, most children have abandoned strategies and now respond on the basis of word concept. Implications of these findings for reading acquisition are briefly indicated.This research was supported by a Tertiary Education Commission, General Development Grant (University of Western Australia), and by an Education Research Grant from the Education Research and Development Committee, Canberra.