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. Author manuscript; available in PMC: 2009 Sep 14.
Published in final edited form as: Arch Gen Psychiatry. 2008 Apr;65(4):421–429. doi: 10.1001/archpsyc.65.4.421

Table 4.

BIC Scores for Qualitative and Quantitative Sex Effects for Animal, Blood/Injury, and Situational Fearsa

ra Variable, Sexes Equal
 ra Variable, Sexes Unequal
Fear BIC Score, ra=1.00, Sexes Equal ra BIC Score ra BIC Score
Animal −27 099.9 +0.34 −27 111.1b +0.34 −26 950.1
Blood/injury −26 881.1 +0.50 −26 888.5b +0.50 −26 776.9
Situational −25 852.4b +0.86 −25 849.5 +1.00 −25 724.4

Abbreviations: BIC, Bayesian Information Criteria; ra, genetic correlation, which assesses the degree of qualitative sex effects.

a

Sexes equal or unequal, that is, whether the genetic and environmental parameter estimates are constrained to equality in males and females, assess quantitative sex effects.

b

Best-fit model by BIC criterion.30