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. Author manuscript; available in PMC: 2012 Oct 1.
Published in final edited form as: Anim Behav. 2011 Oct 1;82(4):627–633. doi: 10.1016/j.anbehav.2011.07.013

Table 1.

Variables for 3 replicates of converging and non-converging pairs in direct benefits experiment. Net reproductive rate (R0)= lxmx (lx, survivorship; mx, expected number of daughters), Generation time (Tc)= xlxmx/R0, and Intrinsic rate of increase (r)= lnR0/Tc. Significance was determined using a Wald Chi-Squared Test, d.f.=1. No significant differences between treatments were detected (p>0.05).

Replicate Convergence N R0 Tc r
1 Yes 24 42.60 14.86 0.32
No 16 52.81 15.23 0.26
2 Yes 14 73..46 15.07 0.29
No 28 57.52 23.89 0.62
3 Yes 11 29.36 35.47 0.01
No 21 52.24 20.86 0.19