Table 3. Standard multiple regression analyses with the reading comprehension of utterances as dependent variable and variables of interest at P1 as predictors (for decoding skills: accuracy scores for word and pseudoword reading).

R2	Predictor variables	β	Proportion of variance accounted by	P
P1–P2: 31%	Listening Comprehension P1	.26	5.48%	<.01
	Decoding skills P1	.33	11.15%	<.01
	Vocabulary P1	.07	0.52%	.15
	Nonverbal IQ P1	.07	0.63%	.12