Coef.	SE
ERGM: Week 1
Edges	−4.705***	0.305
Within-cell homophily	1.200***	0.099
Messages sent (in-ties)	−0.001	0.000
Messages sent (out-ties)	0.005***	0.000
Messages received (in-ties)	0.004***	0.001
Messages received (out-ties)	−0.002***	0.001
Messages sent heterophily	−0.002***	0.000
Messages received heterophily	−0.002***	0.000
SA (in-ties)	0.159	0.384
SA (out-ties)	0.081	0.326
SA heterophily	−0.163	0.309
Reciprocity	2.002***	0.153
Triadic closure (GWESP)	0.503***	0.050
GWESP alpha	1.498***	0.017
GW outdegree	−0.439	0.350
GW indegree	2.352***	0.652
	AIC: 3980	BIC: 4092
ERGM: Week 2
Edges	−5.235***	0.300
Within-cell homophily	1.105***	0.102
Messages sent (in-ties)	−0.004***	0.001
Messages sent (out-ties)	0.006***	0.000
Messages received (in-ties)	0.007***	0.001
Messages received (out-ties)	−0.004***	0.001
Messages sent heterophily	−0.001*	0.000
Messages received heterophily	−0.003***	0.001
SA (in-ties)	1.060**	0.395
SA (out-ties)	−0.989*	0.341
SA heterophily	−1.351***	0.331
Reciprocity	2.080***	0.149
Triadic closure (GWESP)	0.750***	0.061
GWESP alpha	1.301***	0.016
GW outdegree	0.366	0.332
GW indegree	4.535***	0.848
	AIC: 4110	BIC: 4223

^*< 0.05,

^**< 0.01,

^***< 0.001.