Table A2.

Negative binomial GLMMs examining the relationship between male introduction success and the behavioral outcomes of individuals’: aggression given, aggression received, submissive status given and submissive status received.

Predictor	β	SE	z	Pr(> |z|)
Outcome: Aggression given
(Intercept)	2.81	0.08	37.13	<0.01**
Introduction (unsuccessful vs successful)	−0.27	0.16	−1.65	0.09(*)
Age	−0.05	0.11	−0.45	0.65
Dominance rank (Percentile)	1.23	0.11	10.93	<0.01**
Relatedness coefficient	0.02	0.12	0.19	0.85
Outcome: Aggression received
(Intercept)	2.80	0.10	28.43	<0.01**
Introduction (unsuccessful vs successful)	−0.31	0.21	−1.49	0.14
Age	−0.68	0.09	−7.82	<0.01**
Dominance rank (Percentile)	−1.08	0.08	−12.72	<0.01**
Relatedness coefficient	0.02	0.09	0.28	0.78
Outcome: Status given
(Intercept)	3.57	0.12	28.62	<0.01**
Introduction (unsuccessful vs successful)	−0.39	0.24	−1.61	0.11
Age	−0.35	0.09	−4.05	<0.01**
Dominance rank (Percentile)	−1.14	0.09	−12.47	<0.01**
Relatedness coefficient	−0.04	0.09	−0.45	0.66
Outcome: Status received
(Intercept)	3.28	0.13	24.99	<0.01**
Introduction (unsuccessful vs successful)	−0.54	0.26	−2.07	0.04*
Age	0.21	0.12	1.68	0.09(*)
Dominance rank (Percentile)	2.14	0.13	16.59	<0.01**
Relatedness coefficient	−0.35	0.14	−2.57	0.01*

In each model, we included a 3-level nested random effect of categorical ‘group size’ (level-3), ‘group ID’ (level-2), and ‘year of observation’ (level-1).

^*p < 0.05;

^**p < 0.01;

^(*)0.05 < p < 0.10.