More on assortative mating and its effects: http://www.economist.com/news/united-states/21595972-how-sexual-equality-increases-gap-between-rich-and-poor-househ

More on assortative mating and its effects: http://www.economist.com/news/united-states/21595972-how-sexual-equality-increases-gap-between-rich-and-poor-households-sex-brains-and http://www.economist.com/news/united-states/21595972-how-sex... http://www.nytimes.com/2015/12/27/upshot/marriages-of-power-couples-reinforce-income-inequality.html?_r=0 http://www.nytimes.com/2015/12/27/upshot/marriages-of-power-... http://www.economist.com/news/briefing/21640316-children-rich-and-powerful-are-increasingly-well-suited-earning-wealth-and-power http://www.economist.com/news/briefing/21640316-children-ric...