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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Evol Hum Behav. 2013 Oct 25;35(1):65–71. doi: 10.1016/j.evolhumbehav.2013.10.002

Fig. 2.

Fig. 2

(A) Sample of 26 individual cumulative fitness curves by parity for women with total parity of 10 or greater. The plot shows strongly diminishing marginal fitness with parity. Mean fitness is λ̅) = 1.045. (B) Sample of 28 individual cumulative fitness curves by parity for women with recruitment parity of six or greater. The plot shows strongly diminishing marginal fitness with parity. Mean fitness is λ̅ = 1.021.