Table 4.

Summary of hierarchical regression analysis for variables predicting receptive vocabulary size (N = 35).

	Model 1			Model 2			Model 3
Variable	B	SE B	ß	B	SE B	ß	B	SE B	ß
RelProf	0.024	0.005	0.666∗∗∗	0.024	0.005	0.604∗∗∗	0.081	0.026	2.209∗∗
LexM				0.128	0.052	0.306∗	0.158	0.047	0.376∗∗
MorphM				0.044	0.136	0.045	0.099	0.125	0.101
RelProf × LexM							−0.059	0.018	−1.290∗∗
RelProf × MorphM							−0.022	0.032	−0.409
R2	0.444			0.535				0.662
F	26.363∗∗∗			11.879∗∗∗			11.348∗∗∗

RelProf, Relative proficiency; LexM, Lexical metalinguistic awareness; MorphM, Morphological metalinguistic awareness. ^∗p < 0.05, ^∗∗p < 0.01, ^∗∗∗p < 0.001. One child was excluded from the analysis since he was missing lexical awareness scores.