Table 2. Descriptive summaries for performance on the neurocognitive measures.

Neurocognitive domain	N =322	Mean(SD)	(Min, max)	skewness	kurtosis
Simultaneous processing scale	321	13.2(5.9)	(2,41)	1.27	5.70
Sequential processing scale	322	14.2(4.4)	(3,26)	0.29	2.48
Planning	130	5.3(2.9)	(1,13)	0.67	2.91