Table S3.

Post hoc intergroup conflict type model: Post hoc analysis of the effect of the type of intergroup conflict, namely border patrol or intergroup encounter, on urinary oxytocin levels, log-transformed

Term	Estimate	SE	χ2*	P
Intercept	5.660	0.248	–	–
Test predictor
Control†	−1.261	0.189	39.372	<0.001
Intergroup Encounter†	0.060	0.192	0.097	0.756
Control predictors
Group‡	−0.358	0.134	7.014	0.008
Sex§	−0.359	0.209	2.788	0.095
Proximity¶	−0.058	0.068	0.714	0.398
Subgroup size#	0.077	0.054	2.010	0.156
Rank||	0.086	0.099	0.614	0.433

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 ^†border patrol, ^‡East group, and ^§female.

^¶,#,||z-transformed.