Purpose: The spatiotemporal index (STI) is one measure of variability. As currently implemented, kinematic data are used, requiring equipment that cannot be used with some patient groups or in scanners. An experiment is reported that addressed whether STI can be extended to an audio measure of sound pressure of the speech envelope over time that…

Fluent speakers and stutterer's increased voice level were analyzed in response to voice-delayed auditory feedback, an Edinburgh masker, and white noise. These results are used to assess auditory feedback monitoring accounts of speech behavior of fluent speakers and stutterers with some implications for the treatment of stuttering. (37 references)…

Stuttering on function words was examined in 51 children and adults who stutter. Stuttering rate was a function of age (children stuttered more on function words), position (function words in early positions in utterances were more likely to be stuttered), and on whether the function word occurred before or after the single content word.…