Online Sentence Processing in Adults Who Stutter and Adults Who Do Not Stutter

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Abstract
This study had two specific aims. The first aim was to investigate whether, during a silent reading task, persons who stutter encode phonological and semantic information more slowly than persons who do not stutter. The second aim was to investigate how the syntactic context of stimulus sentences influences the speed of coding. Fourteen adult persons who stutter and 14 adult persons who do not stutter participated in a self-paced word-by-word reading experiment. While reading a prose text silently, participants monitored target words that were specified before the presentation of the text. The target words to be monitored for were phonologically similar, categorically related, or identical to a cue word. The influence of syntactic information on the word-monitoring reaction time was studied by presenting the text either as normal prose, in a syntactically correct but semantically anomalous version, or in random word order. The results suggest that the two groups are not different with respect to the speed of word identification but that persons who stutter retrieve semantic information more slowly than persons who do not stutter.

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