Table 1.
Participant characteristics.
| Variable | TD, n = 15 (8 boys, 7 girls) |
SLI, n = 15 (7 boys, 8 girls) |
Group comparisons | ||
|---|---|---|---|---|---|
| M | SD | M | SD | ||
| Chronological age (years; months) | 4;11 | 0;4 | 4;11 | 0;7 | p = .92 |
| Receptive vocabulary (PPVT-4 standard score) | 119.80 | 10.80 | 105.27 | 10.70 | p < .001 |
| Expressive vocabulary (EVT-2 standard score) a | 115.93 | 11.00 | 100.45 | 9.09 | p < .001 |
| Expressive grammar (SPELT-P 2 standard score) | 118.13 | 8.80 | 80.27 | 8.07 | p < .001 |
| Nonverbal cognition (K-ABC2 or P-TONI standard score) | 115.93 | 11.42 | 107.13 | 11.19 | p = .04 |
Note. TD = typically developing; SLI = specific language impairment; PPVT-4 = Peabody Picture Vocabulary Test–Fourth Edition; EVT-2 = Expressive Vocabulary Test–Second Edition; SPELT-P 2 = Structured Photographic Expressive Language Test–Preschool 2; K-ABC2 = Kaufman Assessment Battery for Children–Second Edition; P-TONI = Primary Test of Nonverbal Intelligence.
a
Scores for four children with SLI were not available.