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Auditory-Perceptual Assessment of Fluency in Typical and Neurologically Disordered Speech
Nelly Penttilä1, Anna-Maija Korpijaakko-Huuhka1, Ray D Kent2
1Faculty of Social Sciences, University of Tampere, Finland.
Summary
Speech-language pathologists (SLPs) rated typical speakers higher than those with traumatic brain injury, but agreed more on atypical fluency. Stuttering features impacted fluency perception, highlighting the need for a broader understanding of speech fluency.
Area of Science:
- Neurology
- Speech-Language Pathology
Background:
- Speech fluency is crucial for effective communication.
- Neurological disorders can significantly impact speech fluency.
- Understanding perceptual assessments of fluency by experts is vital.
Purpose of the Study:
- To investigate how speech-language pathologists (SLPs) perceptually assess speech fluency in typical and atypical speakers.
- To determine if SLPs differentiate between speakers with and without neurological communication disorders.
- To identify features that SLPs perceive as impairing speech fluency.
Main Methods:
- Ten expert SLPs rated 90 narrative speech samples.
- Samples included neurologically healthy speakers and those with traumatic brain injury (TBI), including neurogenic stuttering.
- Ratings were conducted using a Visual Analogue Scale.
Main Results:
- Typical speakers received higher fluency ratings than speakers with TBI.
- Judge agreement was higher for atypical fluency assessments.
- Stuttering features, but not speech rate, significantly impaired perceived fluency.
- Stuttering was perceived even in non-stuttering individuals; a borderline fluency was observed.
Conclusions:
- Speech fluency is multifaceted, involving motor, linguistic, and metalinguistic components.
- A broader approach to understanding fluency deviations is suggested.
- Further research is needed on borderline fluency and its disfluencies.
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