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. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Behav Genet. 2014 Dec 25;45(2):200–214. doi: 10.1007/s10519-014-9698-y

Table II.

Model-fitting results from Block #1: AICcs (underline) and Akaike weights.

Free γT0 Fix γT0 = 0
Free rA 38631.89
6.75 × 10−6 (Model #1)		 38629.88
1.85 × 10−5 (Model #2)
Free rA = 0.5 38629.91
1.82 × 10−5 (Model #3)		 38627.9
4.99 × 10−5 (Model #4)

Table notes: The models in this block differ by whether they have rA and γT0 as fixed or free parameters. rA is the correlation between latent factors A1 and A2 for full siblings (including DZ twins). γT0 is the path loading for twin-specific environmental effects. AICcs are underlined; Akaike weights are proportions. Smaller AICcs and greater Akaike weights both correspond to a more-preferable model. A model’s Akaike weight is interpretable as the posterior probability that the model is the best at approximating full reality in the population, given the size of the sample and the set of models under consideration (see Appendix).