AST scores | Group 1 (2–< 2.6 y) (n = 30) | Group 2 (2.6–< 3 y) (n = 30) | Group 3 (3–< 3.6 y) (n = 30) | Group 4 (3.6–< 4 y) (n = 30) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Receptive | Expressive | Total | Receptive | Expressive | Total | Receptive | Expressive | Total | Receptive | Expressive | Total | ||
Percentile ranks | 25th | 119 | 60 | 184 | 163 | 116 | 280 | 174 | 131 | 308 | 180 | 141 | 321 |
50th | 149 | 86 | 230 | 173 | 124 | 297 | 178 | 142 | 321 | 182 | 154 | 337 | |
75th | 167 | 119 | 298 | 179 | 144 | 323 | 182 | 157 | 339 | 185 | 164 | 346 | |
90th | 182 | 143 | 312 | 183 | 154 | 337 | 186 | 163 | 354 | 188 | 173 | 357 |