Table 3 Results of CUG tests.

Results of our CUG tests, with empirical values of network statistics and the probability of observing a greater value in a random network of the same size and density.

Empirical
value
Probability versus
simulations
Direct reciprocity0.23<0.001
Hierarchical reciprocity
(transitivity)
0.38<0.001
Modularity0.380.014
Clustering0.400.019
Exhibiting tolerance
centralization
0.260.060
Receiving tolerance
centralization
0.180.299