Dual inheritance theory | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-27

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Dual_inheritance_theory


00:02:06 1 Theoretical basis
00:02:52 1.1 Culture capacities are adaptations
00:03:25 1.2 Culture evolves
00:03:51 1.3 Genes and culture co-evolve
00:05:19 2 View of culture
00:06:21 3 Genetic influence on cultural evolution
00:07:01 4 Cultural influences on genetic evolution
00:14:46 5 Mechanisms of cultural evolution
00:15:14 5.1 Natural selection
00:15:41 5.2 Random variation
00:16:04 5.3 Cultural drift
00:17:30 5.4 Guided variation
00:18:04 5.5 Biased transmission
00:18:50 5.5.1 Content bias
00:19:36 5.5.2 Context bias
00:20:11 5.5.2.1 Model-based biases
00:21:42 5.5.2.2 Frequency-dependent biases
00:22:45 6 Social learning and cumulative cultural evolution
00:25:12 7 Cultural group selection
00:26:44 8 Historical development
00:30:13 9 Current and future research
00:33:35 10 Relation to other fields
00:33:46 10.1 Sociology and cultural anthropology
00:34:45 10.2 Human sociobiology and evolutionary psychology
00:37:41 10.3 Human behavioral ecology
00:38:42 10.4 Memetics
00:40:17 11 Shortcomings and Criticisms
00:48:05 12 See also



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SUMMARY
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Dual inheritance theory (DIT), also known as gene–culture coevolution or biocultural evolution, was developed in the 1960s through early 1980s to explain how human behavior is a product of two different and interacting evolutionary processes: genetic evolution and cultural evolution. Genes and culture continually interact in a feedback loop, changes in genes can lead to changes in culture which can then influence genetic selection, and vice versa. One of the theory's central claims is that culture evolves partly through a Darwinian selection process, which dual inheritance theorists often describe by analogy to genetic evolution.'Culture', in this context is defined as 'socially learned behavior', and 'social learning' is defined as copying behaviors observed in others or acquiring behaviors through being taught by others. Most of the modelling done in the field relies on the first dynamic (copying) though it can be extended to teaching. Social learning at its simplest involves blind copying of behaviors from a model (someone observed behaving), though it is also understood to have many potential biases, including success bias (copying from those who are perceived to be better off), status bias (copying from those with higher status), homophily (copying from those most like ourselves), conformist bias (disproportionately picking up behaviors that more people are performing), etc..  Understanding social learning is a system of pattern replication, and understanding that there are different rates of survival for different socially learned cultural variants, this sets up, by definition, an evolutionary structure: cultural evolution.Because genetic evolution is relatively well understood, most of DIT examines cultural evolution and the interactions between cultural evolution and genetic evolution.