Table 4:
Correlations Demonstrating Convergent and Divergent Validity
| Measure | N | Spearman’s Rho | P-value |
|---|---|---|---|
| Convergent Measures | |||
|
| |||
| Parent-Report | |||
|
| |||
| VABS-II Communication Raw Score | 45 | 0.79 | 0.00 |
| VABS-II Expressive Raw Score | 45 | 0.82 | 0.00 |
| VABS-II Receptive Raw Score | 45 | 0.62 | 0.00 |
|
| |||
| Direct Assessment | |||
|
| |||
| PPVT-4 Growth Scale Value Score | 43 | 0.70 | 0.00 |
| EVT-2 Growth Scale Value Score | 38 | 0.64 | 0.00 |
| Leiter-R Growth Scale Value Score | 42 | 0.61 | 0.00 |
| ADOS-2 Total Score | 45 | −0.53 | 0.00 |
|
| |||
| Language Sample | |||
|
| |||
| Mean Length of Utterance in Morphemes | 45 | 0.79 | 0.00 |
| Number of Different Words | 45 | 0.72 | 0.00 |
| Total Number of Utterances | 45 | 0.50 | 0.00 |
|
| |||
| Divergent Measures | |||
|
| |||
| CBCL Anxiety/Depression Raw Score | 45 | 0.14 | 0.35 |
| CBCL Rule-breaking Behavior Raw Score | 45 | −0.18 | 0.23 |
| Chronological Age (Years) | 45 | −0.15 | 0.32 |
Note: VABS-II = Vineland Adaptive Behavior Scales, 2nd edition; PPVT-4 = Peabody Picture Vocabulary Test, 4th edition; EVT-2 = Expressive Vocabulary Test, 2nd edition; ADOS-2 = Autism Diagnostic Observation Schedule, 2nd edition; CBCL = Child Behavior Checklist.