Distal causes<\/strong>: initial differences that lead to effects over long periods, and often through indirect relations<\/li>\n<\/ul>\n <\/p>\n
Transmitted versus evoked culture:<\/u><\/p>\n\n- There are two different bases of cultural variability<\/li>\n
- Evoked culture<\/strong>: the notion that all people, regardless of where they are from, have certain biologically encoded behavioral repertoires that are potentially accessible to them, and these repertoires are engaged when the appropriate situational conditions are present o Ex<\/strong>: all individuals are capable of acting in an intimidating manner when their offspring are under threat \u2013 the capacity to act<\/li>\n<\/ul>\n
intimidating is universally present, but is evoked in some people when they find themselves\/their loved ones under threat<\/p>\n
\n- Transmitted culture<\/strong>: the notion that people learn about particular cultural practices through social learning or by modeling the behavior of others who live near them o Ex<\/strong>: if you observe your neighbor planting seeds and notice the benefits she earned for doing so, you might adopt this cultural practice as well<\/li>\n
- Transmitted culture can travel with people when they move to new environments, unlike evoked culture<\/li>\n<\/ul>\n
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How do ideas catch on?<\/u><\/p>\n\n- Rumors arise in all kinds of situations \u2013 particularly in times of war and disaster<\/li>\n
- Rumors are fueled by a lack information, creating an environment in which facts become extremely valuable, and their spread is fanned by strong emotional feelings<\/li>\n
- Rumors can indicate what kinds of ideas come to be spread and become common within a culture<\/li>\n
- Cultures change when new ideas become widely spread among their populations<\/li>\n
- There are two models<\/strong> for understanding how cultural ideas spread:\n
\n- First model considers that the spread of ideas through populations is similar to way that genes replicate<\/li>\n
- Second suggests that the spread of ideas through populations is similar to the way that diseases spread<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n
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Parallels between Biological and Cultural Evolution<\/h3>\n\n- Biological evolution occurs when certain genes become more common in populations than they were in the past o It operates through two related mechanisms:<\/li>\n
- Natural selection<\/strong>: the evolutionary process that occurs when the following<\/li>\n<\/ul>\n
3 conditions are present<\/p>\n
\n- There is individual variability among members of a species on certain traits<\/li>\n
- Those traits are associated with different survival rates<\/li>\n
- Those traits have a hereditary basis<\/li>\n<\/ol>\n
\n- If all these are present, with enough time, you will have natural selection<\/li>\n
- It is the balance of all selective pressures that a species faces in a given environment that affects which individuals will survive to pass on their genes to the next generation<\/li>\n
- Sexual selection<\/strong>: evolutionary process whereby individuals best suited to attract the healthiest mate will be the most likely to have surviving offspring o A mechanism that determines which traits will come to be desired by sexual partners<\/li>\n
- Parallels in cultural evolution\u2026 o Some ideas are more likely to persist across time than other \u2013 they have long survival rates (relating to natural selection)<\/li>\n<\/ul>\n
o Some ideas are more likely to attract adherents than others \u2013 they reproduce more (relating to sexual selection)<\/p>\n
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Ideas as replicators<\/h3>\n\n- Biological evolution is possible because it involves replicators that are able to make copies of themselves<\/li>\n
- Genes are the replicators in biological evolution, and need to possess 3 characteristics: o Longevity:<\/strong> the relative stability and long duration that is an important feature of successful replicators\n
\n- Fidelity<\/strong>: the high level of accuracy in self replicating or reproducing that is an important feature of successful replicators<\/li>\n<\/ul>\n<\/li>\n
- The copying of genes, as accurate as it is, is not always perfect<\/li>\n
- Mutations are a necessary part of evolution, as they provide the variety of potential genes that allows for differential selection o Fecundity<\/strong>: the ability to produce many copies of themselves that is an important feature of successful replicators\n
\n- Determined by the number of offspring an individual organism has<\/li>\n
- Memes<\/strong>: generally the smallest units of cultural info that can be faithfully transmitted (the cultural equivalent to genes) o Ex: tunes, catchphrases, scientific theories, iPod\u2019s, etc.<\/li>\n<\/ul>\n<\/li>\n
- Instructions on particular ways of behaving or speaking which are stored in our brains or written in texts or in objects<\/li>\n
- Basis of variability in genes and memes is fundamentally different o Cultural evolution grows from innovations that are typically not random copying errors but are usually consciously planned innovations<\/li>\n<\/ul>\n
\uf0b7 Memes do not have to be adaptive to become common, unlike evolutionary processes with genes \u2013 many spread although they are maladaptive<\/p>\n
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Epidemiology of Ideas<\/h3>\n\n- Epidemiology of Ideas:<\/strong> a perspective on cultural evolution that contends there is no direct replication of ideas, but that each individual creates his or her own representation of a learned idea<\/li>\n
- Epidemiology<\/u> is the branch of medicine that is concerned with the distribution of diseases among populations<\/li>\n
- This view argues that there is no direct replication of ideas<\/li>\n
- For an idea to be spread from individual to another, the following steps must occur:\n
\n- The inventor has a mental representation of an idea in her mind o The imitator, who learns about this idea from the inventor, then creates a mental representation of this in her own mind<\/li>\n
- The idea is not transmitted directly, rather just the gist of it is<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
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Communicable ideas spread<\/h3>\n