From: Heritability of Stroop and flanker performance in 12-year old children
Zygosity
N Twin1
N Twin2
Overall RT
Flanker effect
MZM
29
31
0.38
0.12
DZM
20
19
-0.01
-0.07
MZF
41
0.35
0.09
DZF
14
15
0.18
0.52
DOS
25
26
0.55
0.04