Abstract
PurposeThe Italian version (Granocchio et al., 2019) of the protocol proposed by Robbins and Klee (1987) allows the assessment of structure of the vocal tract, oromotor and oro-phonatory ability, and articulatory diadochokinesis in children. The aim of this study was to collect the first normative sample of Italian children. MethodsWe measured the total structural score (TSS), total functional score (TFS), oral function score (OFS), phonatory function score (PFS), maximum phonation time (MPT), speed of monosyllable repetition (SMR), and speed of polysyllable repetition (SPR) in 191 typically developing Italian children aged 2.6–6.11 years. ResultsLike the finding observed in the original protocol, there were no significant age-related changes in TSS, but the correlation was observed for TFS, OFS, PFS, MPT, SMR and SPR. The Inter-observer agreement was “good” or “excellent” for all scores except for SPR that was “moderate”. ConclusionsThe increase in oro-motor, oro-phonatory and diadochokinetic abilities confirmed the progressive maturation of these functions with age. The protocol can therefore be considered a useful instrument to classify speech sound disorders (SSDs) by excluding alterations in anatomical structures and evaluate the motor impairment. This normative sample of Italian children allows to use these measures for diagnostic purposes in young Italian speakers.
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