The current study investigated whether phonetic complexity affected stuttering rate for Spanish speakers. The speakers were assigned to three age groups (6-11, 12-17 and 18-years plus) that were similar to those used in an earlier study on English. The analysis was performed using Jakielski's Index of Phonetic Complexity (IPC) scheme in which each…

This study investigated how phonetic complexity affects stuttering rate in German and how this changes developmentally. Phonetic difficulty was assessed using Jakielski's index [Motor Organization in the Acquisition of Consonant Clusters, Dissertation/Ph.D. Thesis, University of Texas Austin, 1998] of phonetic complexity (IPC) in which words are…

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.…