Abstract

The social research about group decision-making in the human societies has received recent contributions from studies reached in the field of ethology and Game theory. Comparative data revealed the adoption of symbolic systems for vote expression and the consensus achievement in other social species. The wide diffusion of the voting procedure—as a sign of an ecological rationality– in species with different social organizations and cognitive levels, requires a new interpretation of the consensus issue assuming a new evolutionary biopolitical perspective, for the survey of the sociality and in particular of the effects of linguistic rationality on the human group decision-making.