Table 1.

Estimates of θ and of LOD Scores, for a Dichotomized Trait

	Mean (Median) Estimates
	Individual-Specific Liabilities		Common Liabilities		10 Liabilities
True θ	Estimated θ	LOD Score	Estimated θ	LOD Score	Estimated θ	LOD Score
Heritability .26:
.0	.015 (.0)	4.37 (4.24)	.047 (.0)	1.62 (1.44)	.0 (.0)	2.42 (2.34)
.05	.05 (.05)	3.12 (3.00)	.08 (.05)	1.22 (1.02)	.0 (.0)	1.91 (1.86)
.1	.1 (.1)	2.09 (1.82)	.13 (.1)	.90 (.73)	.02 (.0)	1.42 (1.37)
Heritability .18:
.0	.025 (.0)	2.23 (2.14)	.095 (.01)	.71 (.55)	.01 (.0)	1.02 (.98)
.05	.06 (.01)	1.63 (1.50)	.13 (.05)	.55 (.39)	.02 (.0)	.81 (.79)
.1	.11 (.1)	1.13 (.89)	.18 (.1)	.43 (.22)	.04 (.0)	.61 (.57)
Heritability .11:
.0	.07 (.0)	.78 (.61)	.16 (.01)	.26 (.16)	.05 (.0)	.30 (.27)
.05	.12 (.05)	.58 (.43)	.20 (.1)	.21 (.09)	.09 (.0)	.23 (.20)
.1	.16 (.1)	.43 (.25)	.22 (.1)	.18 (.05)	.13 (.0)	.19 (.14)