Table A-3.

Linear mixed model output for effects of Age, Language Group, Video Direction, and Trial Order on children’s overall looking time (as a percent of total stimuli duration).

	Percent Looking Time for Children
Predictors	Estimates	std. Error	CI	Statistic	p
(Intercept)	0.643	0.066	0.517 – 0.77	9.769	<0.001
Age	0.033	0.011	0.012 – 0.054	2.875	0.004
Language Group [Signing]	0.03	0.04	−0.047 – 0.108	0.754	0.451
Video Direction [Reversed]	−0.022	0.027	−0.077 – 0.032	−0.785	0.432
Trial Order	−0.008	0.002	−0.012 – −0.004	−4.111	<0.001
Language Group [Signing] * Video Direction [Reversed]	−0.004	0.037	−0.076 – 0.069	−0.121	0.904
Random Effects
σ2	0.04
τ00 name	0.01
τ00 story	0.00
ICC	0.18
N name	35
N story	8
Observations	471
Marginal R2/ Conditional R2	0.088 / 0.249