The Evolution of Cooperation Among Virtual Anthropoids: an agent-based computational model
Below is the abstract of my doctorate thesis written (in Portuguese) under the supervision of professor Bruno P. W. Reis. I presented the thesis at the Federal University of Minas Gerais, on March 10, 2008.
tese.pdf (The thesis, in Portuguese)tese imp.pdf (A version of the thesis without colors in some pictures; It is the best option if you want to print using only black ink.)
coop.tar.bz2 (The model source code)
coop_071115-1_i386.deb(Model compiled for Ubuntu Gutsy)
coop_071115-1_amd64.deb(Model compiled for Ubuntu Gusty AMD64)
Note: Versions of the model developed after the presentation of the thesis are here.
Abstract
This thesis presents a theoretical investigation into the evolution of cooperation among human beings. Arguments are advanced in favor of a greater formalization of theory in social sciences and of use of agent-based models as a complementary method for theoretical investigation. Review of the extant literature on the evolution of cooperation includes an effort to identify shortcomings of the models found. Suggested as a means toward surmounting these deficiencies is a greater understanding of empirical data relevant to formulation of a theory of the evolution of cooperation, such as those data yielded by primatology in study of anthropoids and by paleoanthropology in study of vestigial inheritances from our extinct ancestors. From a basis in this literature arises a proposed model of the evolution of cooperation—this model tested in computer simulation—which is more complex and more realistic than the models reviewed. Cooperation anticipated in elaboration of the model did not emerge in a generalized manner, notwithstanding the emergence of an elevated degree of cooperation between agents of opposite sex. The results obtained indicate that sexual reproduction, absent from the models submitted to review, is a variable highly relevant to this inquiry. The experiments also show a surprising propensity on the part of the agents toward non-retaliation, which propensity remains to be duly interpreted in theoretical terms.