Of the numerous variables which have been theoretically related tofunctional articulation disorders, speech sound discrimination (SSD) has received the most research and clinical attention. However, the majority of these investigations were done with children below age 7 while articulation therapy is generally consideredfor school-aged children. The present study investigated the possibility th...

Acoustic methods have progressed to the point that an acoustic typology of the motor speech disorders can be constructed from a parameteric assessment of the speech subsystems (e.g., phonation, nasal resonance, vowel articulation, consonant articulation, intonation, and rhythm). The results of this analysis can be interpreted in respect to global functions in speech (e.g., voice quality, intell...

Research using electropalatography (EPG) has shown that a distinctive articulatory characteristic of lingual consonants in the speech of school age children with articulation/phonological disorders (APD) is a high amount of tongue-palate contact. Consonants produced in this way have been referred to as involving undifferentiated lingual gestures (UGs). UGs are characterised by contact that lack...