Stuttering and lexical category in adult Arabic speakers.

The purpose of this study was to test whether the content and function word dichotomy of speech disfluency found in English-speaking adults who stutter (AWS) was evident in a language other than English. A group of adult Arabic-speaking AWS were sampled across spontaneous speaking, oral reading, and single-word naming tasks. Moments of disfluency were identified and examined in regard to lexical category. Results indicated no significant differences in the amount of disfluency occurring on content and function words. The production of combined content-function words, a unique feature of the Arabic language, was associated with a high level of disfluency. The linguistic bases of stuttering are discussed in regard to language-specific influences.