Flannery, K. & Marcus, J. The Creation of Inequality: How Our Prehistoric Ancestors Set the Stage for Monarchy, Slavery, and Empire (Harvard Univ. Press, 2012).
Alesina, A. & La Ferrara, E. Participation in heterogeneous communities. Q. J. Econ.…
Socio-economic status is a social construct with heritable components and genetic consequences
