On Januaray 10, 2014 the New York Times Magazine published a condensed interview of Jared Diamond. http://www.nytimes.com/2014/01/12/magazine/jared-diamond-new-guinean-kids-are-not-brats.html
In his most recent book, "The World Until Yesterday", Diamond contrasts what he calls traditional societies with Weird - Western, Educated, Industrialized, Rich and Democratic - societies. The interview quotes him as saying that dispute resolution in traditional societies is better because it "aims to achieve emotional closure".
I can't verify or validate Diamond's conclusion but I can appreciate the notion of emotional closure. It occurs when a dispute ends with feeling of satisfaction or completeness for the people involved, collectively and individually. An elusive goal to be sure, but one that many dispute resolution processes - mediation, collaborative practice, conflict coaching and circles - seek to encourage and explore.