A Study Of Minor Organic Deviations In ‘Functional’ Disorders Of Articulation: 2. Dimensions And Relationships Of The Lips

Abstract
Report of the 2d portion of an investigation of minor factors in articulatory ability studied by dividing speakers into superior and inferior groups. Lip dimensions and relationships of extreme groups were compared with the following results. In 4 dimensional measurements of lip size the differences between ability groups were small and statistically insignificant; the expected differences between sexes were found. Results of estimates of individual lip protrusion were also negative. Two types of relationships between the lips, protrusion of both lips in the same subject and incomplete contact between upper and lower lips were found to be more frequent in the inferior group. This is subject to further research.
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