The NIH Toolbox Cognitive Battery for intellectual disabilities: three preliminary studies and future directions

Table 8 Study 3 ecological validity

	Chronological age	Mental age equivalent	FSIQ (deviation)	Adaptive behavior composite
Dimensional change card sort	.31	.72***	.66***	.33
Flanker	.27	.61***	.70***	.36*
Picture vocabulary	.48**	.67***	.70***	.52**
Oral reading	.39*	.62***	.71***	.42**
Picture sequence memory	.34*	.55**	.57***	.16
Pattern comparison	.17	.45*	.46**	.20
List sorting	.57**	.49*	.52*	-.03
NIH-TCB cognitive composite	–	–	.89***	.42*

Data shown are Pearson’s correlations
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

ISSN: 1866-1955