Table 1.

Results of the GLMM including the following fixed factors: condition (factor variable: yawning video stimulus = 1; control video stimulus = 0), attention level (numeric variable: number of seconds the woman looked toward the video stimuli), video sequence (factor variable: YC = 1, CY = 2), time period (factor variable: 09:00 am–12:30 pm = 1; 12:30–16:00 pm = 2; 16:00–19:30 pm = 3). The identity of the potential responders (Responder) was included as random factor

	Estimate	SE	z	p
(Intercept)a	− 16.953	20.673	—a	—a
Condition (Y)b,c	2.275	0.489	4.655	< .001
Attention	0.305	0.459	0.664	.507
Time period (2)b,c	− 0.976	0.631	− 1.546	.122
Time period (3)b,c	− 0.770	0.669	− 1.151	.250
Sequence (2)b,c	0.195	0.410	0.474	.635

Full vs. null model: χ² = 34.997, df = 5, p < .001

^a Not shown as not having a meaningful interpretation

^b Estimate ± SE refer to the difference of the response between the reported level of this categorical predictor and the reference category of the same predictor

^c These predictors were dummy coded, with Condition (C), Time period (1), Sequence (1) being the reference categories