How Individuals' Self-Image Can Evolve in a Strongly Constrained Society
with Shared Norms of Behaviour and Learning

Juliette Rouchier
rouchier@ehess.cnrs-mrs.fr


     In that paper, we present a set of artificial societies which economies are all based on one principle, that is commonly pointed out in economical ethnology: non-merchant economy. Taking inspiration in the litterature and on a field study, we consider how reputation can be defined in a group where each one wants to participate to a common dynamics. Each agent will acquire its own reputation, which has an impact on the way others want to interact with it. The emergence of gaps in the value of reputation can lead to more or less stable hierarchies within the group. Each agent is defined by its wish to participate to the dynamic of exchange, and the ability it feels to participate in the normal way.
     Taking a holistic point of view, we consider that the position in the society influences the way agents build their representation of themselves. Interest in participation and self-image evolve when the reinforcement is introduced, and this influences the structures of hierachies.
     Our societies usually exhibit very stable equilibrium. What is really interesting is that it is possible to separate very different histories among individual agents, although all of them are identical at the beginning and are given the same learning abilities. We made the definition of each simulation depend on as few parameters as possible, so that to be able to trace the history of each society, and to identify as clearly as possible individual and social feed backs that have an effect on globla results. Our discussion is situated on a theoretical field, since we try to compare holistic and individualist points of view on individual's choices.