Table 2.
Expressive language and speech status of participants with Typical Speech (TS) and Speech Delay (SD) for four age groups. Group 1: 36–41 mos.; Group 2: 42–47 mos.; Group 3: 48–53 mos.; Group 4: 54–60 mos.
| Expressive Language Measures from a Conversational Speech Sample |
Speech Measures from a Conversational Speech Sample |
|||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total MLUw | Lexical Diversity | PCC | PCCR | PVC | PVCR | II | ||||||||||
| Group | Age (mos.) |
n | M | SD | M | SD | M | SD | M | SD | M | SD | M | SD | M | SD |
| TS | ||||||||||||||||
| 1 | 36–40 | 16 | 2.4 | 0.73 | 61.5 | 15.6 | 86.3 | 4.7 | 90.6 | 3.6 | 95.9 | 3.5 | 98.4 | 1.7 | 96.4 | 3.2 |
| 2 | 42–47 | 20 | 3.0 | 0.93 | 74.8 | 13.5 | 89.3 | 5.3 | 92.8 | 3.8 | 96.6 | 3.1 | 97.7 | 2.5 | 97.1 | 3.2 |
| 3 | 48–53 | 19 | 2.9 | 1.04 | 71.7 | 18.9 | 91.7 | 4.6 | 94.9 | 2.8 | 97.4 | 1.8 | 98.2 | 1.6 | 97.8 | 2.6 |
| 4 | 54–57 | 8 | 3.4 | 1.09 | 78.0 | 16.9 | 94.1 | 3.7 | 95.3 | 2.8 | 98.1 | 1.9 | 98.5 | 2.0 | 99.7 | 0.5 |
| Total | 36–57 | 63 | 2.9 | 0.97 | 70.9 | 16.9 | 89.9 | 5.3 | 93.2 | 3.7 | 96.8 | 2.8 | 98.1 | 2.0 | 97.7 | 2.9 |
| SD | ||||||||||||||||
| 1 | 36–41 | 30 | 1.9 | 0.55 | 47.4 | 13.2 | 68.1 | 9.3 | 72.7 | 10.6 | 90.2 | 6.5 | 92.2 | 5.7 | 78.7 | 14.5 |
| 2 | 42–47 | 20 | 2.1 | 0.52 | 51.3 | 12.2 | 66.8 | 12.7 | 71.3 | 12.9 | 89.9 | 6.3 | 92.6 | 5.7 | 87.2 | 11.3 |
| 3 | 48–53 | 29 | 2.4 | 0.69 | 58.9 | 15.8 | 69.4 | 8.6 | 75.0 | 8.8 | 92.3 | 3.4 | 94.0 | 3.0 | 91.3 | 6.6 |
| 4 | 54–60 | 16 | 2.9 | 0.95 | 70.9 | 14.9 | 74.5 | 6.8 | 79.8 | 7.0 | 93.9 | 4.0 | 95.8 | 3.9 | 90.5 | 9.1 |
| Total | 36–60 | 95 | 2.3 | 0.74 | 55.6 | 16.2 | 69.3 | 9.8 | 74.3 | 10.3 | 91.4 | 5.4 | 93.4 | 4.8 | 86.3 | 12.1 |
Note. MLUw = Mean length of utterance in words; PCC = Percent Consonants Correct; PCCR = Percent Consonants Correct-Revised; PVC = Percent Vowels Correct; PVCR = Percent Vowels Correct-Revised; II = Intelligibility Index.