Source Codes of ・K. Itao and K. Kaneko "Evolution of Kinship Structures Driven by Marriage Tie and Competition" Proceedings of the National Academy of Sciences, 2020, https://www.pnas.org/content/pnas/117/5/2378.full.pdf ・K. Itao and K. Kaneko "Emergence of Kinship Structures and Descent Systems: Multi-level Evolutionary Simulation and Empirical Data Analyses" Proceedings of the Royal Society B, 2022, https://royalsocietypublishing.org/doi/full/10.1098/rspb.2021.2641. ・K. Itao and K. Kaneko "Emergence of Kinship Structures and Descent Systems: Multi-level Evolutionary Simulation and Empirical Data Analyses" Proceedings of the National Academy of Sciences, 2024.
We build a simple model of family groups, in which exchange of brides and resultant cooperation and competition are considered, by applying an agent-based model and multi-level evolution. By introducing one dimensional trait and preference, we show the emergence of the incest taboo.
Run one-trait/emergy.py to get the phase diagrams on the emergence of the incest taboo.
Run one-trait/plot.py to get the visual images on the emergence of the incest taboo.
By introducing two dimensional trait and preference, we show the emergence of kinship structures.
Run two-trait/emergy.py to get the phase diagrams on the emergence of kinship structures.
Run two-trait/plot.py to get the visual images on the emergence of kinship structures.
We simplify the one-trait model to extract the essential mechanims and conduct extensive analysis on the dependence upon population size and cultural mutation rate.
Run simple/simple.py for the simulation.
We simplify the two-traiit model and discuss the evolution of kinship structures and descent systems.
Run revised/structure.py for the simulation.
Data analyses using global ethnographic database, the Standard Cross-Cultural Sample are conducted. See data_analysis for details.