Social capital is defined as the shared knowledge, trust, and culture, embodied in the structural forms of networks and other stable inter-agent relationships. Social capital has been shown to be more difficult to build than economic capital, and to have greater beneficial effects for community...

This thesis addresses 3 different aspects of food and poverty related problems in developing countries. The first essay presents a new operational concept of transaction costs that firstly allows assessing the magnitude and secondly recognizing the non homogeneity of food products. This is...