Dunbar+Reading

__**Key Words**__
Brain Size Social Cognition Theory of Mind Social Group Size Culture

//Cognition// - the act or process of knowing; perception.
//Hominid// - any of the modern or extinct bipedal primates of the family hominidae, including all species of the genera Homo and Australopithecus. //The Social Brain Hypothesis// - was proposed to explain primates’ unusually large brains: It argues that the cognitive demands of living in complexly bonded social groups selected for increases in executive brain. //Theory of Mind -// the ability to appreciate that another individual has a mind that controls its behavior that cannot be accessed directly but which can be modeled mentally.

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//Neocortex -//the largest and evolutionarily most recent portion of the cerebral cortex, composed of complex, layered tissue, the site of most of the higher brain functions. =====  //**Definitions from article, and also Dictionary.com .**//   -Catarrhines (catarrhini): subdivision of higher primates including Old World monkeys and apes.
 * there is a significant correlation between social factors and neocortex size, but no such significant correlation between ecological factors and neocortex size.
 * social group size among hominids is variable but constrained by relative size of the neocortex.