What is the social brain hypothesis quizlet?
social brain hypothesis. brain size constrains the size of social network: memory for relationships and social skills to manage relationships. dunbar’s number. suggested cognitive limit to the number of people with whom one can maintain stable social relationships (100-230)
Who created the social brain hypothesis?
The original idea for the social brain dates back to the 1970s, when a number of primatologists suggested that primate intelligence might be related to the demands of their more complex social world (Jolly, 1969; Humphrey, 1976; Kummer, 1982), and the name itself was later coined by the neuroscientist Lesley Brothers ( …
What is the evidence in support of the social brain hypothesis?
The primary evidence in support of the social brain hypothesis comes from the fact that, across primates, there is a correlation between mean social group size and more or less any measure of brain size one cares to use (Fig.
What is the social brain hypothesis and what number does Dunbar associate with this hypothesis in the case of early human groups?
According to British anthropologist Robin Dunbar, the “magic number” is 150. Dunbar became convinced that there was a ratio between brain sizes and group sizes through his studies of non-human primates.
What is a critique of the social brain hypothesis quizlet?
What is the criticism of the social brain hypothesis? Human ultra-sociality leads to culture which is adaptive. This is opposed to large brains as a result of general intelligence. Humans are specialised for sociality e.g. emulative learning as opposed to imitative learning.
Is culture among chimpanzees cumulative quizlet?
Why isn’t there much cumulative culture among chimpanzees? Chimpanzees aren’t very good at imitative learning. existential universal. After measuring the neocortex ratio of two species, it was determined that Species A has a ratio of .
How important is brain size in providing evidence for the social intelligence hypotheses?
Wilson noted a positive relationship between relative brain size and rate of evolution in vertebrates. He explained this by arguing that big-brained species exhibit greater behavioral plasticity, are more innovative, and are more capable of social learning than small-brained species.
What theory is best supported to explain why primates evolved such large brains?
What theory is best supported for why primates evolved such large brains? They tend to live in large social groups, which requires intelligence to function effectively. emulative learning does not require imitating a model’s behavioral strategies.
What is the Machiavellian intelligence hypothesis?
The “Machiavellian intelligence” hypothesis (or the “social brain” hypothesis) posits that large brains and distinctive cognitive abilities of humans have evolved via intense social competition in which social competitors developed increasingly sophisticated “Machiavellian” strategies as a means to achieve higher …
What is the rule of 150?
(For those unfamiliar, The Rule of 150 was coined by British Anthropologist, Robin Dunbar, and is defined as the “suggested cognitive limit to the number of people with whom one can maintain stable social relationships and thus numbers larger than this generally require more restrictive rules, laws, and enforced norms …
What is the significance of the Social Brain Hypothesis?
The social brain hypothesis was proposed as an explanation for the fact that primates have unusually large brains for body size compared to all other vertebrates: Primates evolved large brains to manage their unusually complex social systems. Although this proposal has been generalized to all verteb …
What is the function of the social brain?
The so-called social brain circuit has been divided into two main networks : the first, centered in the amygdala, is thought to process the emotional significance of social stimuli ; the second, centered in the nucleus accumbens, is known for coding the rewarding nature of objects and events.
How does genetics contribute to the social brain?
Genetics and biology also contribute to the social brain in ways we don’t yet fully understand. For example, individuals with autism / autistic individuals may experience difficulties with social interaction and communication. This may include challenges with things like understanding the punchline of a joke.
Is the human brain a prewired social brain?
Though social interaction is such a fundamental human trait, we aren’t born with a prewired social brain. Much of our social ability is grown and honed over time through repeated social interactions. Brain networks that support social interaction continue to specialize into adulthood.