Disfluent whole-word repetitions in cluttering: Durational patterns and functions

In this article, disfluent word-repetitions are analysed in cluttered and control speech. The main questions are the following: (1) Do different functions of word-repetitions occur in different ratio in cluttered and control speech? (2) Are there any differences between PWC and control speakers in durational parameters of disfluent word-repetitions? Results show that there are differences between the two groups of speakers in the types of word-repetitions, and in their durational parameters. In cluttered speech, the most frequent type of repetitions were covert self-repairs while in control speech canonical repetitions are dominated. There were significant differences in the durational parameters of word-repetitions of both groups except in the function of covert self-monitoring. According to the results, it can be concluded that as in earlier studies, analysis of the frequency of types of disfluencies in themselves is not enough as this analysis does not always show the differences between the two groups. It is important to learn more about the durational and functional characteristics of the specific types of disfluencies comparing them in cluttered and control speech.