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. Author manuscript; available in PMC: 2017 May 18.
Published in final edited form as: J Hum Evol. 2016 Apr 29;94:126–133. doi: 10.1016/j.jhevol.2016.03.007

Figure 4.

Figure 4

Evaluating the effects of within species variation in group size and phylogenetic uncertainty. (A) Within species variation in group size. The relationship between group size and neocortex ratio is shown after resampling species-specific group size values using a consensus tree (1000 regressions). (B) Phylogenetic uncertainty. The relationship between group size and neocortex ratio is shown using 1000 different probable phylogenies with mean group size values. Gray lines = individual regressions, dashed lines = regression based on mean group size values and the consensus tree.