Table A3.

Associations Between Cognitive Endophenotypes, ADHD and Sex

Cognitive Endophenotype	Correlation with Total ADHD	Mean Sex Difference	Variance Difference
PS	r=−.32, p<.001	t(1072) = 5.50, p<.001†, d=.27	F(1, 930) = 6.79, p=.009
WM	r=−.22, p<.001	t(1050) = −3.03, p=.003†, d=−.14	F(1, 1072) = 5.57, p=.018
PA	r=−.22, p<.001	t(976) = −0.51, p=.611, d=−.03	F(1, 976) = 1.60, p=.206
VR	r=−.16, p<.001	t(1072) = −3.90, p<.001, d=−.20	F(1, 1072) = 3.23, p=.072
NVR	r=−.06, p=.063	t(1072) = −3.97, p<.001, d=−.16	F(1, 1072) = .06, p=.812
INH	r=−.34, p<.001	t(977) = 3.26, p=.001, d=−.12	F(1, 977) = 2.80, p=.095
SDRT	r=−.28, p<.001	t(930) = −2.36,p=.018, d=.16	F(1, 930) = 1.60, p=.207
Risk	r=−.16, p=.090	t(111) = −2.50, p=.014, d=−.46	F(1, 111) = 1.21, p=.275
Monitor	r=−.10, p=.292	t(111) = 3115, p=.002, d=39	F(1, 111) = .72, p=.400

Note: P-values are two-tailed.

^†T-test statistic reported using unequal variances assumed. Bold italics indicate significant results in the expected direction.