Transaction Cost (TC) economics is highly relevant to public policy issues, enabling exploration of the influence of institutional and organisational arrangements upon policy performance. As policies evolve, often becoming more multifaceted as they grow, so the associated transactions costs...

The heterogeneity of farms and the problem of self-selection are challenging the evaluation of treatments in agriculture. This is particularly the case for rural development measures whit voluntary participation and heterogeneous outcomes. But knowledge about the selection mechanisms for a...