Table IV.

Standardized parameter estimates from the psychometric model

		Behavioral Inhbition Latent Factor			Proportion of Method Variance Explained
	Method	A	C	E	Latent	Au	Cu	Eu
14 months	Observation	0.66**	0.25	0.09**	0.62	0.00	0.00	0.38**
	Parent report				0.29	0.31**	0.30	0.11*
20 months	Observation	0.43**	0.46	0.11	0.66	0.00	0.04	0.30**
	Parent report				0.37	0.25**	0.33	0.04*
24 months	Observation	0.75**	0.20	0.05	0.63	0.00	0.10	0.26**
	Parent report				0.38	0.31**	0.13	0.17**
36 months - female	Observation	0.53**	0.43	0.04	0.65	0.00	0.10	0.26**
	Parent report				0.36	0.13	0.46	0.05*
36 months - male	Observation	0.81*	0.00	0.19	0.56	0.04	0.00	0.40**
	Parent report				0.30	0.52**	0.00	0.18**

Note:

^*indicates a significant p value of <.05;

^**indicates a significant p value of <.01. The subscript u refers to unique A, C, and E influences on each method’s variance after accounting for proportion of variance explained by the latent factor.

Parameter estimates were individually dropped from the full model to test statistical significance. A series of one degree of freedom chi-square difference tests were computed comparing the full model to each model with the dropped parameter. Statistical significance is indicated when dropping the parameter from the model results in a significant decrement in fit. Statistical significance of the variance explained by the latent variable was not assessed because the factor loadings are fixed in the psychometric model.