. Author manuscript; available in PMC: 2022 Jul 1.

Published in final edited form as: Dev Sci. 2021 Mar 2;24(4):e13086. doi: 10.1111/desc.13086

Table A-2.

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

	Percent Looking Time for Infants
Predictors	Estimates	std. Error	CI	Statistic	p
(Intercept)	0.767	0.089	0.595 – 0.939	8.574	<0.001
Age	0.001	0.009	−0.017 – 0.019	0.115	0.909
Language Group [Signing]	−0.047	0.055	−0.155 – 0.06	−0.844	0.398
Video Direction [Reversed]	−0.025	0.025	−0.075 – 0.024	−1.00	0.318
Trial Order	−0.011	0.002	−0.015 – −0.006	−4.607	<0.001
Language Group [Signing] * Video Direction [Reversed]	0.024	0.039	−0.053 – 0.1	0.604	0.546
Random Effects
σ²	0.03
τ_{00 name}	0.01
τ_{00 story}	0.00
ICC	0.36
N _name	26
N _story	8

Observations	349
Marginal R²/ Conditional R²	0.052 / 0.398