Katherine McCauliffe and Peter Blake have been playing sharing games with children in different countries. Children learn to reject unfair deals at different ages in different countries.
They are critical of the fact that most psychological investigations take place in the WEIRD countries: Westernised, Educated, Industrialised, Rich, and Democratic. This study is an attempt to redress that imbalance.
You can click straight through to read this article on line, and there is also a nice video to watch which demonstrates the sharing game.
Nature, 18th November 2015.