Lecture 2 Flashcards
Is culture unique to humans?
no -> if we define culture as information acquired through social learning
other species show cultural learning: monkeys, dolphines, killer whales, pigeons, bird species (calling strategies), octopus
What is characteristic of cultural learning in humans?
it is faster (even upon single exposure) and imitation targeted
prestige bias = when we learn cultural skills, we pick the best available example to learn from
What are differences between chimp and child learning?
learning how to operate puzzle box to obtain a treat
all imitate the researcher’s behavior
however, when second box is introduced -> see-through -> shows that not all researcher’s steps are necessary to obtain reward
chimps skip unnecessary steps to obtain reward
children are predisposed to copy all experimenter’s steps
imitative learning
type of learning prominent in humans
full imitation
it is less effective, but more precise -> social learning -> internalizing mental states of the prototype
emulative learning
type of learning prominent in chimps
main focus on the outcome
more effective, less precise
accumulation of information is not as good as in the case of imitative learning (due to lower precision)
similarity bias
chosing imitation model based on how similar they are to us
conformist transmission
tendency to learn from people who are engaging in behaviors that are more common
following the majority
Why humans are better at accumulation of cultural information?
1) theory of mind
2) language -> no other species have grammar/syntax
3) sharing experiences and goals -> collaborative learning
innovation
modification and improvement of transmitted cultural information
cultural ideas need to constantly develop
ratchet effect
constant improvement of ideas, progress
cultural information can continue to build without losing earlier information
What faciliates cultural learning in humans?
1) bigger brain - 16% of metabolism is spent on brain functioning
2) high encephalization quotient - brain to body ratio
encephalization quotient
ratio of human brain to the body (relative brain size) - largest in humans (except for shrew! ryjówka)
What are implications for the body of developing bigger brain?
smaller/weaker muscles compared to other species
shorter intestines compared to other species (less energy spend on digesting food => more energy spend on the brain)
gene-culture coevolution
example how culture → cooking → contributed to gene evolution (shorter intestines)
What are evolutionary advantages of bigger brain?
better functioning in groups (better at creating and navigating social hierarchies)
social brain hypothesis → neocortex ration: neocortex is larger compared to sub-cortical parts = most social processes happen at neocortex
Where does culture come from?
- Jared Diamond - focused on ecology in creating culture
cultural norms as adaptive responses to features of ecology (geography + climate)
What would effect of unpredicatble environment with many threats be on culture?
spontaneity and strong short lived motivations
What would be effect of dependence on food sources obtained through bravery on culture?
masculine culture
what are causes of cultures? how do they differ?
there are proximal and distal causes
proximal causes = differences that have direct and immediate effect
distal causes = differences that have effect over longer period of time through indirect processes
what is example of proximal cause?
no hunting tradition in Hawaii bc there are no large mammals there
what are examples of distal causes?
stronger immune system as a result of domesticating animals and sedentary lifestle
cultural variation in geneder roles - the harsher environments, the more masculinity is valued
What are two ways of explaining cultural variation?
evoked culture = all people have biologically based repertoire of behaviors that are accessible to them and these behaviors are engaged for appriopriate situations
transmitted culture = cultural norms learned from other individuals