Human Evolutionary Studies Program, Simon Fraser University
Saturday All day, Plaza Level
Comparative and classical statistical methods agree that social group size is a good predictor of neocortex volume in primates. Here I examine this finding using novel statistical methods that directly model heterogenous multivariate coevolutionary processes allowing the correlation structure of evolving traits to vary across clades and across branches grouped by discrete characteristics such as diet or activity cycle. I find that the correlation between social group size and neocortex size may be stronger than previously reported, but only in certain types of primate.
Supported by NSERC and the Canada Foundation for Innovation