Table 3.

Linear regression beta weights and significance for Preschool Language Scale composite raw scores within groups factoring out cognitive scores and age.

Predictors	AD**	LD**	TD*
Age	0.57*	0.90**	0.80**
Cognitive scores	0.49	0.33	0.09
Attention to the target	0.97**	0.22	0.10
Attention to the mouth	0.62*	-0.41*	0.21
Attention to the eyes	0.35	0.04	0.09

Linear regressions for AD: F(5,7) = 8.72, p < 0.05, R² = 0.86, TD: F(5,9) = 17.67, p < 0.01, R² = 0.91, LD: F(5,5) = 17.10 p < 0.01, R² = 0.95. Cognitive scores were based on the WPPSI or Bayley scores depending on the child‘s age. Attention to the target, mouth and speaker were calculated at proportions of tracked trial time spent fixating each region of interest. *p < 0.05, **p < 0.01.