Evolution of improvement and cumulative culture

研究成果: Article

10 引用 (Scopus)

抄録

Humans have created highly developed cultures, brought about by iterative improvements in technology. Using a mathematical model, I investigated the conditions under which cultural traits tend to be improved for a higher level of culture to evolve. In the model, I consider three ways of learning: individual learning, simple social learning, and improvements of socially learned cultural traits (social improvement). I obtain the evolutionarily stable number of cultural traits acquired through each way of learning. I show that organisms improve many socially learned cultural traits under the following conditions: (1) environmental stability is intermediate; (2) the environment is severe; (3) the success rate of individual learning is high; (4) the utility of cultural traits acquired by individual learning is large; (5) the accuracy of social learning is high; and (6) the increase in the utility of beneficial cultural traits attained by social improvement is large. I also show that when organisms have greater ability for social improvement, the average utility of the beneficial cultural trait increases, the proportion of beneficial cultural traits among all cultural traits decreases, and the total number of cultural traits acquired by the three ways of learning is constant. These results shed light on the origins of human cumulative culture.

元の言語English
ページ(範囲)30-38
ページ数9
ジャーナルTheoretical Population Biology
83
発行部数1
DOI
出版物ステータスPublished - 2013 2 1
外部発表Yes

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learning
organisms
mathematical models

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

これを引用

Evolution of improvement and cumulative culture. / Nakahashi, Wataru.

:: Theoretical Population Biology, 巻 83, 番号 1, 01.02.2013, p. 30-38.

研究成果: Article

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