We conduct dictator-type games in rural Paraguay; different treatments involve manipulating players' information and choice sets. From individuals' choices in the games, we draw inferences regarding the sorts of impediments to trade restricting villagers' ability to share. We rule out full...

We construct a model of food demand which distinguishes between the nutrients supplied by a particular food bundle and the quality of that bundle, as measured by its cost. We show that when nutrition affects only utility then under rather general conditions it will be optimal for all members of...