How Does Language Familiarity Influence Stuttering under Delayed Auditory Feedback?

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Abstract
The purpose of the experiment was to determine how language familiarity affects stuttering under delayed auditory feedback (DAF). In one condition we compared DAF interference in German-English bilinguals speaking their more and less familiar languages. A language familiarity effect was found: the bilinguals spoke faster and stuttered less under DAF when speaking their more familiar language. This effect was independent of both delay time and language spoken. Moreover, the slower rate in the less familiar language could not explain the language familiarity effect since instructing Ss to slow down their rate of speech decreased rather than increased their stuttering. A second condition showed that the language familiarity effect was not due to paying more attention to feedback in the less familiar language. Rather, practice or experience in producing the motor organization of speech seemed to underlie the effect of language familiarity.

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