Appendix Table A1.

Pearson correlations among study variables

	Inattention	Impulsivity	DMS percent accuracy at 0 ms	DMS percent accuracy at 4000 ms	DMS percent accuracy at 12 000 ms	PAL stages completed on first trial	PAL first trial memory score	SWM strategy	SWM between errors	RT incongruent – RT congruent	SOC problems solved in minimum moves
Inattention	1	0.75***	−0.32***	−0.16	−0.20*	−0.25**	−0.35***	0.18*	0.30***	−0.22**	−0.17*
Impulsivity		1	−0.27***	−0.09	−0.20*	−0.13	−0.28***	0.21**	0.20*	−0.25**	−0.23**
DMS percent accuracy at 0 ms			1	0.16	0.03	0.11	0.19*	−0.04	−0.09	0.05	0.12
DMS percent accuracy at 4000 ms				1	0.13	0.26***	0.31***	0.13	−0.17*	0.03	0.01
DMS percent accuracy at 12 000 ms					1	0.17*	0.24**	0.03	−0.21**	0.10	0.14
PAL stages completed on first trial						1	0.79***	−0.03	−0.32***	−0.02	0.19*
PAL first trial memory score							1	−0.08	−0.39***	0.12	0.28***
SWM strategy								1	0.42***	−0.19*	−0.24**
SWM between errors									1	−0.20*	−0.41***
RT incongruent – RT congruent										1	0.12
SOC problems solved in minimum moves											1

DMS, Delayed Matching to Sample; PAL, Paired Associates Learning; SWM, Spatial Working Memory; RT, reaction time; SOC, Stockings of Cambridge.

^*Correlation is significant at the 0.05 level (two-tailed).

^**Correlation is significant at the 0.01 level (two-tailed).

^***Correlation is significant at the 0.001 level (two-tailed).