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Reliability of auditory perceptual assessment of hypernasality in speech using different scales
Stockholms universitet, Samhällsvetenskapliga fakulteten, Psykologiska institutionen, Perception och psykofysik.
2018 (engelsk)Inngår i: Fechner Day 2018: Proceedings of the 34th Annual Meeting of the International Society for Psychophysics / [ed] Friedrich Müller, Lara Ludwigs, Malizia Kupper, International Society for Psychophysics , 2018, s. 43-44Konferansepaper, Publicerat paper (Annet vitenskapelig)
Abstract [en]

Auditory-perceptual assessment has been criticized because of its inherent subjectivity. However, perceptual judgments are the primary tool in the clinical assessment of voice and resonance parameters and a key task for the speech–language pathologist/therapist (SLP/T). Decision on treatment or further examination is based on the perceptual speech assessment which need to be reliable. Of all perceptual dimensions used to distinguish normal from abnormal speech the most difficult to judge reliably is hypernasality (Watterson et al., 2017). Nevertheless, the final decision regarding whether an individual has nasality or other speech problems is based on the listener’s subjective measurement (Moll, 1λ64). Nasality is present in normal voice production and refers to perceived nasal sounds arising from the coupling of the oral and nasal resonating cavities. Nasal consonants are common in the languages. Normal nasal resonance has a range of acceptability and is perceived along a continuum, while nasal resonance disorders are associated with defects or dysfunction in the palate. In the current study the reliability of perceptual assessment of hypernasality with three different methods were compared. Standardised audio recordings of 5-year-old Swedish-speaking children with repaired cleft palate consisting of 73 stimuli in three different randomised orders were perceptually assessed by four experienced speech-language pathologists using three different methods: a sort and rate procedure (VISOR) allowing comparison between and ordering stimuli along a visual analogue scale; a 2- step method beginning with determination whether the speech resonance is within normal range or not. If not, the stimulus is rated along a 3 point ordinal category scale; a combined category-ratio scale (Borg centiMax®(cM)), where verbally well-defined categories are levelanchored to a ratio scale. Each listener completed a total of 657 hypernasality ratings (73 stimuli in 3 orders by 3 methods) for the rating task. Good to excellent intra-rater reliability was found within each listener for all methods. The highest inter-rater reliability was demonstrated for VISOR and the Borg cM. High consistency within each method was found with the highest for the Borg cM. In conclusion, both the VISOR and the Borg centiMax® seem appropriate for auditory-perceptual assessment of hypernasality with similar and high reliability. However, the Borg cM showed slightly better consistency and seems easiest to use in a clinical setting. Further research should aim for valid definitions of how hypernasality corresponds to the categories along the scale.

sted, utgiver, år, opplag, sider
International Society for Psychophysics , 2018. s. 43-44
Serie
Proceedings of Fechner Day ; 34
Emneord [en]
auditory-perceptual assessment, perceptual judgments, abnormal speech, nasality, measurement, Borg centiMax®
HSV kategori
Forskningsprogram
psykologi
Identifikatorer
URN: urn:nbn:se:su:diva-163760OAI: oai:DiVA.org:su-163760DiVA, id: diva2:1276488
Konferanse
Fechner Day 2018: 34th Annual Meeting of the International Society for Psychophysics, Lüneburg, Germany, August 20-24, 2018
Tilgjengelig fra: 2019-01-08 Laget: 2019-01-08 Sist oppdatert: 2019-06-26

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