The effects of temporal delay and frequency alteration on the speaking rates of children

Children's speaking rates under delayed auditory feedback (DAF) do not appear to be significantly affected by the extent of the frequency envelope in the auditory feedback from portable and conventional OAF units. The electroacoustic characteristics of conventional research and portable electronic delayed auditory feedback instrumentation are substantially different. A portable DAF unit has a more limited frequency-response pattern at normal operating intensities than does a conventional DAF unit. However, in this study, analyses of the effects of both types of instruments revealed high correlations between speaking rates. This suggests that both types of instruments are valid tools for modifying children's speaking rates.