Table 5.

Multivariate modeling results of genetic and environmental influences on ADHD, Homework and Reading Comprehension [with 95% confidence intervals].

Full ADHD Model	Shared Influences between ADHD, Homework and RC	Shared Influences between Homework and RC	Independent Influences on RC
	A1 [C.I.]	A2[C.I.]	A3[C.I.]
ADHDa	.77* [.66–.88]
Homeworkb	.40* [.28–.50]	.61* [.49–.72]
RCc	.42* [.23–.58]	.00 [.00–.10]	.66* [.52–.78]
	C1	C2	C3
ADHDa	.62* [.45–.73]
Homeworkb	.00 [.00–.15]	.58* [.43–.69]
RCc	.17 [.00–.40]	.19* [.02–.37]	.46* [.11–.58]
	E1	E2	E3
ADHDa	.14* [.08–.20]
Homeworkb	.37* [.27–.41]	.00 [.00–.24]
RCc	.11 [.00–.19]	.07 [.00–.38]	.31 [.00–.37]
ADHD Inattention
	A1 [C.I.]	A2[C.I.]	A3[C.I.]
Inattentiond	.79* [.68–.94]
Homeworkb	.30* [.16–.41]	.70* [.58–.82]
RCc	.41* [.23–.57]	.00 [.00–.13]	.66* [.52–.78]
	C1	C2	C3
Inattentiond	.47* [.18–.62]
Homeworkb	.00 [.00–.24]	.60* [.42–.72]
RCc	.15 [.00–.45]	.26* [.07–.43]	.43 [.00–.56]
	E1	E2	E3
Inattentiond	.39* [.18–.44]
Homeworkb	.17* [.11–.35]	.19 [.00–.37]
RCc	.10* [.03–.24]	.16 [.00–.38]	.28 [.00–.37]
ADHD Hyperactivity
	A1 [C.I.]	A2[C.I.]	A3[C.I.]
Hyperactivitye	.68* [.60–.78]
Homeworkb	.34* [.22–.44]	.65* [.53–.78]
RCc	.33* [.14–.49]	.00 [.00–.16]	.71* [.59–.81]
	C1	C2	C3
Hyperactivitye	.67* [.56–.75]
Homeworkb	.00 [.00–.12]	.58* [.41–.70]
RCc	.14 [.00–.33]	.27* [.06–.45]	.43 [.00–.56]
	E1	E2	E3
Hyperactivitye	.28* [.24–.32]
Homeworkb	.08* [.03–.14]	.35* [.11–.40]
RCc	.00 [.00–.08]	.13* [.06–.37]	.31 [.00–.37]

Note.

^*indicates significance based on confidence intervals not bounding zero.

^aLatent factor of ADHD from SWAN and DBD Inattention and Hyperactivity/Impulsivity factors

^bLatent factor of Homework Behavior from ECS Parent and ECS Child

^cLatent factor of Reading Comprehension from FAIR and FCAT Reading Comprehension scores

^dLatent factor of Inattention from SWAN and DBD Inattention factors

^eLatent factor of Hyperactivity from SWAN and DBD Hyperactivity/Impulsivity factors