Table 4.
Percentage of unscorable response types.
| Unscorable code | Example | FXS | SLI | TD |
|---|---|---|---|---|
| Third-person singular probe | ||||
| Other verb tense | He is playing. | 61.9 | 100 | 100 |
| Omission of verb | She hat. He running. | 38.1 | ||
| Past tense probe | ||||
| Other verb tense | She digs. He will eat. | 81.6 | 66.7 | 100 |
| Omission of verb | He going. He fast. | 15.8 | 16.7 | |
| Subject error | *He ran. | 16.7 | ||
| Unintelligible | He X cookie. XXX. | 2.6 | ||
| Be/do probe | ||||
| Other verb tense | He cried. She jumps. | 17.1 | 13.5 | 60.2 |
| Omission of verb | *Do they want some? | 21.3 | 39.1 | 14.4 |
| Transpose | They are tired? | 9.8 | 29.7 | 19.5 |
| Subject error | Are you hungry? | 39.4 | 6.5 | 0.6 |
| Yes/no response | No. Yes. | 2.6 | 6.5 | 2.5 |
| Echo | Ask the puppet. | 7.3 | 1.5 | 0.9 |
| Unintelligible | They X hungry. | 2.1 | 0.7 | 1.7 |
| Wh-question word | Why they like milk? | 0.5 | ||
Note. FXS = fragile X syndrome; SLI = specific language impairment; TD = typical development; * = omitted word; X = unintelligible word or set of words.