Lecture 2 Flashcards
(63 cards)
Prestige Bias (1)
- the tendency to imitate prestigious others more than less prestigious others
Theory of mind (3)
- allows us to learn and accumulate cultural information from eachother in precise ways
- the ability to understand that others have minds that are different to our own
- results in imitative rather than emulative learning
Imitative Learning (1)
- type of social learning in which the learner internalizes the aspects of the model’s goals and behavioural strategies
Emulative Learning (1)
- type of social learning focused on the environmental events involved in a model’s behaviour
Imitative vs Emulative Learning Study (5)
- children and chimpanzees are shown a model using a tool to get a desired object in 1 of 2 ways
- most effective way is when the tool is upside down (dragging)
- ineffective way is to use it with the teeth down
- children showed imitative which resulted in less effective use
- chimpanzees showed emulative and more effective use
-emulative learning can be more adaptive in some situations but it does not allow for accumulation of cultural info
Ratchet effect (2)
- human cultures are cumulative, after an idea is learned from others, it can be modified and improved by others, leading to a ratchet effect
-ratchet effect is process by which cultural info becomes more complex and useful over time
Innovation and Social Transmission (2)
- cultural evolution requires invention and high fidelity social transmission so that new info is repeated enough
- this requires precise imitative learning (theory of mind) and sophisticated communication (language)
Population size and interconnection (2)
-as population size increases, the more cultural accumulation is maintained and increased because there is a higher likelihood of having and encountering a successful model to copy and build upon
- losses in cultural info can occur if the size of a population of interconnected minds shrinks, leaving learners with less skilled models to copy from
Encephalization quotient (1)
- the ratio of brain weight of an animal to the brain weight predicted for a comparable animal of the same body size
Consequences of having big ass brains (3)
- they require much energy to operate
- this we have considerably less muscle mass to balance this
- we also have shorter guts
Cooking (1)
- our big brains and smaller guts were made possible by the invention of cooking as it does part of the digestion for us
Social Brain Hypothesis (2)
- theory that proposes that cognitive demands in inherent social living led to the evolution of large primate brains
-those that were most successful at handling the cognitive demands that come with complex social communities were more likely to attract mates, secure resources and protect offspring
Neocortex ratio (2)
- neocortex is the brain area where social computational processes take place
- the volume of the neocortex relative to the volume of the rest of the brain, comparisons of the neocortex ratio across primates showed that those living in larger social groups tended to have larger neocortex ratios
Proximal Causes (1)
- causes of cultural variation can be proximal: have a direct and immediate relationship with their effects
Distal Causes (1)
- causes of cultural variation can be distal: initial differences that lead to effects over longer periods, often through indirect relations
Spain and the Incans Case Study (7)
- Proximal cause: technology and diseases
- The Spanish had steel swords and ships while Incans had stone clubs, the Spanish also spread a smallpox epidemic
-Distal causes: geography and climate - Eurasia had a variety of plant species suitable for domestication -> agriculture -> sedentary lifestyle -> development of tools and technology
- Eurasia also had domesticated animals -> development of diseases -> immunity to said diseases over time
- A denser population in Eurasia and major continental axis permitted greater idea exchange -> more inventions -> widespread immunity
- minor geographical variations can result in large cultural differences
Ecology (2)
- Climate can influence cultural norms
- Harsher climates and scarcer resources result in more masculinity values
Evoked Culture (3)
- the notion that people have certain biologically based behavioural repertoires that are accessible, which are engaged when appropriate situational conditions arise
- norms will arise when certain behaviours are engaged often in the environment
- i.e. choosing a physically attractive partner is even more important in places with higher parasite prevalence as it is an index of health
Transmitted Culture (4)
- the notion that people learn about particular cultural practices through social learning or by modeling the behaviour of others who live near them
- most cultural differences can be explained by this, more important than evoked
- it can travel with people when they move to a new environment
- it is always involved in maintaining and spreading norms even when evoked culture is present
Natural Selection (3)
- evolutionary process which occurs when individual variability exists among members of species on certain traits
- these traits are often associated with different reproductive rates as these traits have a hereditary basis
- the proportion of advantageous traits will increase over time
Cultural Evolution (2)
- the process by which some cultural ideas are more likely to attract followers than others, thereby becoming more common in a population
- these ideas are not tied to genes so they can be passed to more people than offspring and do not have to be adaptive
What contributes to the spread of info? (4)
- communicability
- usefulness
-emotionality
-unexpectedness
Communicability (2)
- the idea is easy to remember and summarize, it is socially desirable and personally relevant
- it spreads because it is more likely to be talked about
Usefulness (2)
- the idea is relevant and useful
- the idea spreads because sharing useful info shows cooperation which increases chances of being helped in the future