Table 5.

Results of the ‘association-skew’ model (Model 3) fitted to test for species differences in the differentiation of association patterns for each individual towards individuals of the same sex and of the opposite sex, respectively. Significant p-values are indicated in italics. p-Values are only given for terms not included in an interaction. Results are based on PAV values derived from the ‘individual randomization’. Results for other randomizations are provided in electronic supplementary material, tables S4 and S7.

Model 3 association-skew
sample sizesnumber of all individuals across all quarters = 7673; number of unique individual ID = 315; number of quarter ID = 200, number of communities = 7; number of quarter ID within individual ID = 3897
null versus full modelχ2d.f.p-value
25.764<0.001
estimate ± s.e.χ2p-value
intercept0.61 ± 0.39
Sex 1 (male)0.50 ± 0.25
Sex 2 (male)−0.05 ± 0.18
species (chimpanzee)0.81 ± 0.46
Sex 1 × Sex 2−0.67 ± 0.27
Sex 1 × species−1.21 ± 0.28
Sex 2 × species−0.90 ± 0.21
Sex 1 × Sex 2 × species1.35 ± 0.3010.95<0.001