Table 3.

AICc, delta AICc and Total Akaike Weights (Σw_i) for each model. ‘S’ = social transmission.

Model	AICc	Delta AICc	Total weighted AICc (Σwi)
*S only in HR, varies between HR groups	334.13	11.91	0.002
S in all groups	330.96	8.74	0.009
*S only in HR, constant between HR groups	330.96	8.74	0.009
S varies between all groups	328.6	6.38	0.027
No S in any group	328.27	6.05	0.036
**S varies between LR and HR	326.75	4.53	0.078
S only in LR, constant between LR groups	326.5	4.28	0.088
S only in LR, varies between LR groups	322.22	0	0.75

^*‘Hard’ rank bias hypothesis

^**‘Soft’ rank-bias hypothesis candidate