Table 2.
English performance on tests of language, verbal memory, and nonverbal ability for MB (score) at T2, compared with that of typically developing monolingual English children and children with Down Syndrome (DS; means, standard deviations), matched to MB on word reading accuracy
| Measure (max score) | MB | TDE (n = 15) | Point estimate1 (95% CI) | DS (n = 6) | Point estimate2 (95% CI) |
|---|---|---|---|---|---|
| Nonverbal ability | |||||
| Object assembly (37) | 12 | 30.73 (5.79)** | 0.37 (0.00–2.63) | 15.67 (8.04) | 34.51 (9.97–65.88) |
| Block design (40) | 20 | 28.40 (3.48)* | 1.74 (0.03–8.31) | 20.67 (3.27) | 42.85 (15.75–73.05) |
| Block recall (44) | 7 | 22.40 (3.87)** | 0.09 (0.00–0.76) | 15.33 (4.23) | 6.39 (0.04–30.23) |
| Vocabulary | |||||
| Receptive (135) | 40 | 92.27 (11.78)** | 0.04 (0.00–0.32) | 62.00 (12.45) | 8.00 (0.10–33.75) |
| Expressive (54) | 16 | 35.40 (6.49)* | 0.59 (0.00–3.81) | 17.17 (4.92) | 41.72 (14.93–72.11) |
| Verbal memory | |||||
| Digit recall (54) | 20 | 22.60 (2.47) | 16.27 (4.67–34.30) | 16.33 (3.83) | 79.22 (47.70–97.23) |
| Word recall (42) | 12 | 16.80 (2.86) | 6.32 (0.69–19.23) | 12.00 (1.67) | 50.00 (21.18–78.82) |
Notes. 1Percentage of the English typically developing population aged 7 years estimated to perform below MB's score
2Percentage of the English DS population aged 8–10 years with age‐appropriate word reading estimated to perform below MB's score. CI = confidence interval.
* p < .05, ** p < .01, *** p < .001.