Table 4.

Results of multiple regression analyses including each dimension of child temperament, lexical diversity, and their interaction as regressors (controlling for caregiver education).

Estimating Child Receptive Language from Effortful Control and Caregiver Lexical Diversity
Regressors	β	SE	t
(Constant)	−16.55*	4.57	−3.62
Caregiver Education (Covariate)	.18*	.08	2.29
Effortful Control	2.70*	.87	3.10
Lexical Diversity	.06*	.02	2.83
Effortful Control x Lexical Diversity	−.01*	.00	−2.52
Model Summary	R2 = .42, F(4, 54) = 9.60, p < .001**
Estimating Child Receptive Language from Negative Affectivity and Caregiver Lexical Diversity
Regressors	β	SE	t
(Constant)	−3.03	3.38	−.90
Caregiver Education (Covariate)	.10	.09	1.10
Negative Affectivity	.16	.81	.20
Lexical Diversity	.02	.02	.93
Negative Affectivity x Lexical Diversity	−.00	.00	−.47
Model Summary	R2 = .23, F(4, 54) = 4.12, p = .005*
Estimating Child Receptive Language from Surgency-Extraversion and Caregiver Lexical Diversity
Regressors	β	SE	t
(Constant)	−.79	2.84	−.28
Caregiver Education (Covariate)	.15	.09	1.67
Surgency-Extraversion	−.37	.59	−.63
Lexical Diversity	.00	.01	.06
Surgency-Extraversion x Lexical Diversity	.00	.00	.45
Model Summary	R2 = .22, F(4, 54) = 3.81, p =.009*

Note:

^*p <.05,

^**p<.001