Table 1.
Descriptive statistics for the 10 participants whose speech samples were selected to estimate the reliability of data reduction methods used in the Speech Disorders Classification System (SDCS).
| Typically Developing (TD) |
Motor Speech Disorders (MSD) |
|||||||
|---|---|---|---|---|---|---|---|---|
| n | M | SD | Range | n | M | SD | Range | |
| Description | ||||||||
| Male | 2 | 5 | ||||||
| Female | 3 | 0 | ||||||
| Age (yrs) | 7.3 | 2.8 | 4.3–10.4 | 10.4 | 4.8 | 4.6–16.2 | ||
| MSAP Tasks | ||||||||
| Conversational Speech Sample (CSS) | 5 | 5 | ||||||
| Goldman-Fristoe Test of Articulation (2nd ed.;GFTA-2) | 5 | 5 | ||||||
| Challenging Words Test (CWT) | 5 | 3 | ||||||
| Lexical Stress Task (LST) | 5 | 5 | ||||||
| Vowel Task 1 (VT1) | 5 | 5 | ||||||
| Competence Indicesa | ||||||||
| Segmental | ||||||||
| Vowels-PVC | 99.4 | 0.4 | 98.9–100 | 89.4 | 8.4 | 76.0–98.6 | ||
| Consonants-PCC | 95.2 | 5.4 | 86.5–99.2 | 82.2 | 12.2 | 64.0–97.8 | ||
| Vowels & Consonants-II | 98.9 | 1.7 | 95.9–100 | 87.3 | 18.5 | 54.8–99.3 | ||
| Suprasegmentalb | ||||||||
| Prosody | ||||||||
| % App. Phrasing | 90.8 | 5.4 | 83.3–95.8 | 77.1 | 10.4 | 66.7–87.5 | ||
| % App. Rate | 100 | 0 | N/A | 68.2 | 31.1 | 29.2–100 | ||
| % App. Stress | 90 | 9.1 | 75–100 | 83.6 | 12.4 | 63.6–91.7 | ||
| Voice | ||||||||
| % App. Loudness | 94.2 | 6.3 | 87.5–100 | 97.5 | 3.7 | 91.7–100 | ||
| % App. Pitch | 93.2 | 5.7 | 87–100 | 99.2 | 1.9 | 95.8–100 | ||
| % App. Laryngeal Quality | 93.3 | 7.6 | 83.3–100 | 72.5 | 12.4 | 54.6–87.0 | ||
| % App. Resonance | 99.2 | 1.9 | 95.8–100 | 69.6 | 37.4 | 4.2–95.8 | ||
a
PVC=Percentage of Vowels Correct; PCC=Percentage of Consonants Correct; II=Intelligibility Index (Percentage of Intelligible Words)
b
The percentage of 24 utterances in the conversational speech sample coded as appropriate for each of the seven prosody-voice domains.