Table 3. Influence of independent factors on the number of affiliative behavior from bystanders in Analysis 1, Model 2.

Independent term
Factors	Level	Coef	SE (coef)	t	P (>|t|)
Intercept		0.29	0.42	0.70	0.48
Context	PP	0.74	0.08	8.94	<0.001
Familiarity between focal children and bystanders		3.32	0.60	5.56	<0.001
The focal children’s usual frequency of receiving affiliative behavior		0.01	0.01	1.95	0.05

We analyzed the data in 566 sessions (283 PP-MC pairs, focal child = 12, bystander = 56, focal-bystander dyad = 144) in Analysis 1, Model 2. In the factor “context”, the parameters were shown in the same way as Table 2.