Table 6.
Rasch model of developmental difference for CELF-4 and CASL subtests and correlation with Response Dispersion Index (RDI) for all participants
| Test | Subtest | ASD+ person-fit | ASD− person-fit | ASD+ vs. ASD− | Pearson’s correlation person-fit vs RDI | ||
|---|---|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | p value | N | r | p value | ||
| CELF | Concepts and Following Directions | .57 (.279) | .71 (.252) | 0.010 | 123 | − 0.998 | < .001 |
| Formulated Sentences | .45 (.297) | .80 (.232) | < .001 | 425 | − 0.945 | < .001 | |
| Recalling Sentences | .44 (.281) | .79 (.209) | < .001 | 446 | − 0.947 | < .001 | |
| Word Structure | .49 (.238) | .64 (.233) | 0.026 | 67 | − 0.994 | < .001 | |
| Word Definitions | .30 (.216) | .59 (.207) | < .001 | 322 | − 0.773 | < .001 | |
| Word Classes-Total | .45 (.267) | .78 (.185) | < .001 | 374 | − 0.996 | < .001 | |
| CASL | Ambiguous Sentences | .21 (.242) | .57 (.271) | < .001 | 330 | − 0.984 | < .001 |
| Inference | .26 (.261) | .57 (.216) | < .001 | 106 | − 0.983 | < .001 | |
| Pragmatic Judgment | .43 (.290) | .82 (.233) | < .001 | 441 | − 0.997 | < .001 | |
| Non-literal Language | .32 (.275) | .72 (.202) | < .001 | 377 | − 0.992 | < .001 | |
| Meaning from Context | .27 (.254) | .67 (.211) | < .001 | 325 | − 0.989 | < .001 | |