The 81st Annual Meeting of the American Association of Physical Anthropologists (2012)


The trouble with tarsiers: heterogeneity in the relationship between neocortex volume and social group size in primates

MICHAEL G. ELLIOT.

Human Evolutionary Studies Program, Simon Fraser University

Saturday All day, Plaza Level Add to calendar

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

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