TABLE 2.

Experimental Measures: Group Means and Comparison to Norms

	CI Children				NH Children				Group Cmp
Measure	n	M	SD	t	n	M	SD	t	t
FingTap	23	8.8	2.6	−2.1*	31	10.2	2.3	0.5	2.07*
FingDis-P	24	15.8	1.7	—	31	16.6	1.6	—	2.9
FingDis-NP	24	15.9	2.1	—	31	16.3	2.1	—	0.36
Knock-Tap	24	28.2	2.20	—	31	28.7	1.07	—	1.45
Design Copy	23	10.2	2.1	0.4	31	12.1	3.2	3.6**	2.48*
VisSp-Lrn	24	10.8	3.3	1.2	31	10.5	3.2	0.8	−0.43
VisSp-Ttl	24	11.4	3.1	2.2*	31	11.4	3.2	2.5*	0.00
VisSp-Del	24	10.8	2.9	1.4	31	11.5	2.2	3.8**	0.99

All scores are scaled scores except for FingDis-P, FingDis-NP, and Knock-Tap, which are raw scores. In the cases where scaled scores were available, one-sample t-tests were conducted to compare to norms (scaled score = 10). VisSp-Lrn: visual-spatial learning score (sum of scores on trials 1–3) from the Children’s Memory Scale; VisSp-Ttl: visual-spatial “total” score (sum of scores on trials 1–3 plus short delay trial) from the Children’s Memory Scale; VisSp-Del: visual-spatial “long delay” score from the Children’s Memory Scale; FingTap: fingertip tapping score from the NEPSY; FingDis-P: finger discrimination preferred hand score from the NEPSY; FingDis-NP: finger discrimination non-preferred hand score from the NEPSY; Design Copy: from the NEPSY; Knock-Tap: from the NEPSY.

^*p< .05,

^**p<. 01.