Table 3.

Results of Significance Tests for Age and Language Ability From 10,000 Simulated Replications with n=100.

		ANOVA model		GLM model
Predictor	True ${\eta }_{\text{p}}^2$	(dichotomous age)		(continuous age)
		Obs. ${\eta }_{\text{p}}^2$	% Sig	Obs. ${\eta }_{\text{p}}^2$	% Sig
Age	.34	.12	94	.33	100
Language	0	.03	27	.01	5
Interaction	0	.01	4	.01	5

Note. Obs. ${\eta }_{\text{p}}^2$ is the observed value of ${\eta }_{\text{p}}^2$ effect size. Significance values for predictors are from F tests using Type III SS.