Departamento de Física

Facultad de Ciencia
Universidad de Santiago de Chile

Seminario | Miércoles 09 octubre 2019 - 15:30 horas | Dr. Yaroslav Ispolatov - U. de Santiago

Fecha: 
10/09/2019 - 15:30

Con mucho agrado los invitamos a participar del seminario que dictará el Dr. Yaroslav Ispolatov, académico de nuestro Departamento,  este miércoles 09 de octubre de 2019 a las 15:30 horas en la Sala de Conferencia del 3er piso del Departamento de Física.

“How the acculturation maintains the belligerence and
intergroup conflicts”
Conflict between groups of individuals is a prevalent feature in human societies. A common
theoretical explanation for intergroup conflict is that it provides benefits to individuals within
groups in the form of reproduction-enhancing resources, such as food, territory, or mates.
However, it is not always the case that conflict results from resource scarcity. Here, we show
that intergroup conflict can evolve, despite not providing any benefits to individuals or their
groups. The mechanism underlying this process is acculturation: the adoption, through coercion
or imitation, of the victor’s cultural traits. Acculturation acts as a cultural driver (in analogy
to meiotic drivers) favoring the transmission of conflict, despite a potential cost to both the
host group as a whole and to individuals in that group. We illustrate this process with a
two-level model incorporating state-dependent event rates and evolving traits for both
individuals and groups. Individuals can become “warriors” who specialize in intergroup conflicts
but are costly otherwise. Additionally, groups are characterized by cultural traits, such as
their tendency to engage in conflict with other groups and their tendency for acculturation.
We show that, if groups engage in conflicts, group selection will favor the production of
warriors. Then, we show that group engagement can evolve if it is associated with
acculturation. Finally, we study the coevolution of engagement and acculturation. Our model
shows that horizontal transmission of culture between interacting groups can act as a cultural
driver and lead to the maintenance of costly behavior by both individuals and groups.
Carrera: 
Doctorado en Ciencia con Mención en Física