Table 2.

Variance components of pupillary dilation response measures

Standardized Variance Components
Measure	A (95% CI)	C (95% CI)	E (95% CI)
Full Cholesky
Dilation at 3 Digits	.36 (.10;.52)	.00 (.00;.20)	.64 (.48;.83)
Dilation at 6 Digits	.33 (.05;.59)	.14 (.00;.38)	.53 (.38;.74)
Dilation at 9 Digits	.36 (.06;.54)	.01 (.00;.23)	.63 (.46;.84)
Reduced Cholesky
Dilation at 3 Digits	.36 (.17;.52)	----	.64 (.48;.83)
Dilation at 6 Digits	.30 (.10;.60)	.17 (.00;.32)	.53 (.38;.73)
Dilation at 9 Digits	.37 (.17;.54)	----	.63 (.46;.83)
Unstandardized Variance Components
Measure	A	C	E
Reduced Cholesky
Dilation at 3 Digits	.36	----	.65
Dilation at 6 Digits	.57	.32	1.01
Dilation at 9 Digits	.76	----	1.26

Key: A, additive genetic influences; C, common/shared environmental influences; E, unique environmental influences; CI, confidence interval.