| Sumario: | This article explores the effect that words from different lexical categories have on disfluency in 12 Persian children, ten boys and two girls, who stutter. They were aged 7 years 5 months to 10 years 6 months. Words from the participants' narrative and reading samples (sub-tests of the Reading and Dyslexia Test validated for Persian school-aged children) were categorized as content, function, or content-function, and stuttering-like disfluencies were coded in each speech sample. Content and content-function words were significantly more likely to show stuttering-like disfluencies than function words. The distribution of symptom types over content and content-function words was similar, and differed from the distribution seen in function words. The symptom type analysis also supported the view that whole-word repetitions should not be grouped with other stuttering-like disfluencies.
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