Table 2.

Conditional Probability that an Individual Possesses a Trait-Value-Increasing Allele, Given that His or Her Trait Value Is in the Lower and Upper Percentiles of the Trait Distribution and under the Assumption of Different Trait-Locus Allele Effects^[Note]

		Locus Heritability		Probability (Threshold) for
Trait-LocusAlleleFrequency	d	Broad-Sense	Narrow-Sense	αl=.10	αu=.10	αl=.05	αu=.05	αl=.25	αu=.05
.5	.0	.333	.333	.155 (−1.580)	.846 (1.580)	.116 (−2.015)	.886 (2.015)	.234 (−.839)	.886 (2.015)
.5	.5	.360	.320	.088 (−1.420)	.759 (1.810)	.049 (−1.908)	.781 (2.212)	.197 (−.581)	.781 (2.212)
.3	.0	.296	.296	.060 (−1.917)	.660 (1.148)	.043 (−2.322)	.725 (1.598)	.098 (−1.222)	.725 (1.598)
.3	.5	.393	.367	.021 (−1.857)	.626 (1.481)	.012 (−2.284)	.654 (1.915)	.052 (−1.102)	.654 (1.915)
.1	.0	.152	.152	.013 (−2.174)	.312 (.601)	.010 (−2.551)	.375 (1.021)	.022 (−1.541)	.375 (1.021)
.1	.5	.265	.265	.004 (−2.164)	.391 (.826)	.002 (−2.543)	.454 (1.307)	.008 (−1.516)	.454 (1.307)
.5	1.0	.429	.286	.049 (−1.333)	.665 (2.111)	.021 (−1.865)	.667 (2.500)	.174 (−.360)	.667 (2.500)
.5	−1.0	.429	.286	.334 (−2.113)	.951 (1.330)	.334 (−2.502)	.981 (1.863)	.388 (−1.438)	.961 (1.863)
.3	1.0	.500	.412	.009 (−1.836)	.582 (1.863)	.003 (−2.273)	.586 (2.295)	.025 (−1.031)	.586 (2.295)
.3	−1.0	.247	.114	.231 (−2.228)	.667 (.668)	.231 (−2.599)	.811 (1.206)	.231 (−1.600)	.811 (.189)
.1	1.0	.381	.361	.001 (−2.160)	.454 (1.116)	.001 (−2.542)	.496 (1.681)	.002 (−1.505)	.496 (1.681)
.1	−1.0	.038	.007	.091 (−2.277)	.159 (.319)	.091 (−2.641)	.203 (.702)	.091 (−1.667)	.203 (.702)

Note.— For all runs, a=1. The table entries essentially give solutions to equation (3), with thresholds (in parentheses) defined as in equation (2); probabilities of possessing the allele are shown, given trait values in the lower α_l percentile and the upper α_u percentile.