Table 4.

Absolute value of the mean REML estimates of the positive and negative loadings for the two common factors in FA-2 and RR-2

aModel	Common factor	Mean positive loading	Mean negative loading
FA-2	1	0.273	0.022
	2	0.126	0.083
RR-2	1	0.231	0.022
	2	0.105	0.103

^aRN-L Linear reaction norm; RN-NL Nonlinear reaction norm; FA-2 Factor-analytic model with two common factors and specific genetic effects; RR-2 Reduced-rank factor-analytic model with two common factors and zero specific genetic effects