Table 1.
Sample size of assessments administered at each visit
| Groups | Leiter | Expressive Vocabulary Test |
Peabody Picture Vocabulary Test |
Mean Length of Utterance |
Children’s Communication Checklist, Second Edition |
Comprehensive Assessment of Spoken Language |
Pragmatic Rating Scale- School Age |
Theory of Mind |
Behavior Rating Inventory of Executive Function Preschool Version |
|
|---|---|---|---|---|---|---|---|---|---|---|
| Visit 1 | DS Boys | 22 | 22 | 22 | 22 | 14 | 22 | 20 | 22 | 13 |
| DS Girls | 24 | 24 | 24 | 23 | 20 | 24 | 15 | 22 | 22 | |
| TD Boys | 23 | 23 | 23 | 22 | 15 | 23 | 18 | 21 | 19 | |
| TD Girls | 24 | 24 | 24 | 24 | 13 | 24 | 19 | 17 | 21 | |
|
| ||||||||||
| Visit 2 | DS Boys | 20 | -- | 20 | 18 | 13 | 20 | -- | 19 | -- |
| DS Girls | 22 | -- | 22 | 21 | 15 | 22 | -- | 22 | -- | |
| TD Boys | 19 | -- | 19 | 15 | 8 | 18 | -- | 15 | -- | |
| TD Girls | 15 | -- | 15 | 14 | 14 | 15 | -- | 10 | -- | |
|
| ||||||||||
| Visit 3 | DS Boys | 15 | 14 | 14 | 14 | 8 | 14 | 14 | 13 | 9 |
| DS Girls | 14 | 13 | 13 | 14 | 10 | 14 | 12 | 14 | 9 | |
| TD Boys | 11 | 10 | 10 | 8 | 6 | 11 | -- | 6 | 6 | |
| TD Girls | 11 | 11 | 11 | 7 | 9 | 11 | -- | 3 | 8 | |
Note. DS = Down syndrome; TD = typically developing.