Table S7.

Post hoc event model 3: Post hoc analysis of the effect of intergroup conflict and in-group affiliation on urinary oxytocin levels, log-transformed, with control with coordination as the reference category

Term	Estimate	SE	χ2*	P
Intercept	5.051	0.283	–	–
Test predictor levels
Control without affiliation†	−0.698	0.222	9.517	0.002
Control with affiliation†	−0.576	0.255	5.000	0.025
Intergroup conflict without affiliation†	0.499	0.245	4.085	0.043
Intergroup conflict with affiliation†	0.635	0.261	5.799	0.016
Control predictors
Group‡	−0.319	0.127	5.916	0.015
Sex§	−0.307	0.200	2.292	0.130
Proximity¶	−0.035	0.057	0.378	0.538
Subgroup size#	0.082	0.049	2.714	0.099
Rank||	0.077	0.100	0.574	0.449

Statistically significant results (P ≤ 0.05) appear in bold.

^*Degrees of freedom are 1.

^†,‡,§χ² and P values refer to comparison with the reference categories ^†control with coordination, ^‡East group, and ^§female.

^¶,#,||z-transformed.