Francesconi, Marco; Ghiglino, Christian; Perry, Motty - Institute for the Study of Labor (IZA) - 2009
groupings. Since most non-human species are not familial, something special must be behind the family. It is shown that the two … necessary features that explain the origin of the family are given by uncertain paternity and overlapping cohorts of dependent … children. With such two features built into our model, and under the assumption that individuals care only for the propagation …