1 See Edward Dutton & Bruce Charlton, The Genius Famine, University of Buckingham Press, 2015.
2 Gregory Clark, A Farewell to Alms, Princeton University Press, 2007.
3 John Calhoun, ‘Death squared: The explosive growth and demise of a mouse population’ in Proceedings of the Royal Society of Medicine, 66: 80-88, 1973.
4 MA Woodley of Menie, M Saraff, R Pestow & H Fernandes, Social epistasis: Deleterious mutations, extended social phenotypes and rapid fitness decline. Evolutionary Psychological Science, DOI 10.1007/s40806-017-0084-x, 2017.
5 See, E Dutton, G Madison, & R Lynn, ‘Demographic, economic, and genetic factors related to national differences in ethnocentric attitudes,’ in Personality and Individual Differences, 101: 137143, 2016.
6 See Dutton and Charlton, ibid., for summary.
7 See Dutton and Charlton, ibid.