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A cognitive-evolutionary model for the evolution of teaching
1Department of Biology, Department of Linguistics, MindCORE University of Pennsylvania, United States.
Teaching mechanisms are crucial for human cultural evolution. This study models teaching costs and benefits, revealing that high direct costs and an "explain-exploit" trade-off can limit teaching evolution, impacting cumulative culture.
Area of Science:
- Cultural Evolution
- Behavioral Ecology
- Cognitive Science
Background:
- Social learning is central to cultural evolution.
- Teaching mechanisms, which shape available information, are equally vital, particularly in humans.
- Previous models often overlook the cognitive and evolutionary costs of teaching.
Purpose of the Study:
- To develop a model of teaching in skill transmission.
- To analyze the evolutionary costs and benefits of teaching.
- To investigate factors limiting teaching evolution and its role in cumulative culture.
Main Methods:
- Developed a simple model of teaching within a dual-inheritance framework.
- Explicitly represented cognitive aspects of skill transmission.
- Derived evolutionary costs and benefits of teaching strategies.
Main Results:
- Teaching may not evolve if its direct cost is too high.
- An "explain-exploit" trade-off creates an indirect cost (opportunity cost) to teaching.
- Evolutionary limits on teaching strength arise when direct costs increase with effort.
Conclusions:
- Teaching mechanisms are inherently self-limiting due to direct and indirect costs.
- Despite limitations, teaching plays a significant role in the evolution of human cumulative culture.
- Understanding teaching costs is key to understanding cultural evolution.
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