Amazon river at sunset, Amazonas, Brazil

Frequency-Dependent Social Transmission and the Interethnic Transfer of Female Genital Modification in the African Diaspora and Indigenous Populations of Colombia

We present a quantitative account based on ethnographic and documentary research of the prevalence of female genital modification (FGMo) occurring in the African diaspora and Indigenous populations of Colombia. We use this data to test hypotheses concerning the cultural evolutionary drivers of costly trait persistence, attenuation, and inter-group transmission. The uptake of FGMo by Indigenous populations in Colombia is consistent with frequency-dependent hypotheses for the social transmission of the FGMo trait from the African diaspora population in the time period following the era of slavery in Colombia. The prevalence and severity of FGMo declines with level of sociocultural integration into mainstream Colombian culture. Our results provide empirical support for the cultural evolutionary models proposed by Ross et al (2015) to describe the transmission dynamics of FGMo and other costly traits. Analysis of costly trait dynamics contributes knowledge useful to applied anthropology and may be of interest in policy design and human rights monitoring in Colombia and elsewhere.

Read the paper online or download the preprint here.

Bibtex:

@article{
RossEtAl2015freqdep,
year={2015},
journal={Human Nature},
volume={26},
number={4},
doi={10.1007/s12110-015-9234-7},
title={Frequency-Dependent Social Transmission and the Interethnic Transfer of Female Genital Modification in the African Diaspora and Indigenous Populations of Colombia},
url={http://dx.doi.org/10.1007/s12110-015-9234-7},
publisher={Springer US},
author={Ross, Cody T. and Campiño, Joyas Patricia  and Winterhalder, Bruce},
pages={351-377}
}

Dialogue & Discussion