Extended Data Fig. 5: Methods for behavioural analyses.
From: Fitness benefits and emergent division of labour at the onset of group living
a, Resampling scheme. Ninety-five per cent confidence intervals were generated by resampling individual r.m.s.d. values from one colony of size 16 at a time. In the example here, the generation of confidence intervals for behavioural variation (standard deviation of r.m.s.d.) in colonies of size 6 is shown. The same method was used to generate confidence intervals for mean colony behaviour (mean r.m.s.d.). b–e, Computing specialization. b, Daily individual r.m.s.d. values in one colony of size 8. c, Daily individual r.m.s.d. ranks. d, Pairwise rank correlation matrix between days of the first brood-care phase. Values highlighted in red indicate rank correlations (Spearman, n = 16 ants) between consecutive days, which are averaged to compute short-term behavioural consistency. e, Mean r.m.s.d. ranks per brood-care phase used to compute long-term behavioural consistency.
