Table 3.
Study 2 ecological validity
| Chronological age | Mental agea | FSIQb | Adaptive behavior composite | |
|---|---|---|---|---|
| Dimensional change card sort | .23 | .40** | .53** | .27 |
| Flanker | −.02 | .59*** | .77*** | .59** |
| Picture vocabulary | .32* | .22 | .38 | .26 |
| Oral reading | .04 | .61*** | .71*** | .73*** |
| Picture sequence memory | .03 | .14 | .44* | .44* |
| Pattern comparison | .19 | .24 | .50** | .10 |
| List sorting | .28 | .54** | .61** | .50* |
| NIH-TCB cognitive composite | – | – | .75*** | .61** |
Data shown are Pearson’s correlations. Note: NIH-TCB age-adjusted z deviation scores were used to correlate with age-adjusted standardized measures (IQ, adaptive behavior), whereas computed or theta scores (unadjusted) were used for correlations with mental and chronological age
*p < .05; **p < .01; ***p < .001
aIn study 2, mental age was either the actual mental age generated from individual IQ tests when test results were available or it was estimated by the examiner
bIn study 2, IQ scores (Leiter-R or Stanford-Binet 5) were available from prior recent records in a subset of the sample (n = 25)