Table 4.

Bivariate genetic model for hoarding and OCS. Residual = amount of variance that is not shared between hoarding and OCS phenotypes. A² = proportion of variance due to additive genetic factors. C² = proportion of variance due to common or shared environmental factors. E² = proportion of variance due to unshared (unique) environmental factors. Note that the first and the last columns sum to 1 for Hoarding total and OCS total, respectively; p = significance level, NS = not significant.

	Hoarding total variance component	Hoarding residual Variance	Hoarding + OCS shared variance	OCS residual variance	OCS total variance
A2	0.307 p<0.0001	0.201*	0.095 p = 0.01	0.281 p < 0.0001	0.376*
C2	0.022 p = NS	0.018*	0.01 p = NS	0.008 p = NS	0.022*
E2	0.549 p < 0.0001	0.592*	0.034 p < 0.0001	0.567 p < 0.0001	0.601*

^*derived value.