Phoneme awareness in children: a function of sonority.

This study tested the hypothesis that the sonority of phonemes (a sound's relative loudness compared to other sounds with the same length, stress, and pitch) influences children's segmentation of syllable constituents. Two groups of children, first graders and preschoolers, were assessed for their awareness of phonemes in coda and onset positions, respectively, using different phoneme segmentation tasks. Although the trends for the first graders were more robust than the trends for the preschoolers, phoneme segmentation in the two groups correlated with the sonority levels of phonemes, regardless of phoneme position or task. These results, consistent with prior studies of adults, suggest that perceptual properties, such as sonority levels, greatly influence the development of phoneme awareness.