order to determine the level of profitability or feasibility regarding this economic sector, respectively agriculture. In … economic efficiency of the Romanian agricultural sector. Determining the level of profitability of agriculture is very … order to be able to determine the global economic efficiency in the agriculture of Romania, first of all, indicators of the …

disciplines, viz., groups, norms and sanctions. Secondly, it must be couched in a language familiar to the economics profession … given the sanctions for norm violation. The choice of social group follows from a rank order of groups by greatest inclusive …

between the members of the same groups. In the real world, individuals are members of groups and want to reward or punish … those groups whose members have been kind or unkind to members of their own. In this paper, we extend Dufwenberg and … Kirchsteiger's model of sequential reciprocity (Games Econ Behav 47(2):268-298, 2004) to groups of individuals and define a new …

Competition between groups is ubiquitous in social and economic life, and groups are typically not created equal. Here … competition between groups that are either homogeneous or heterogeneous in the ability of their members to contribute to the … involving heterogeneous groups are higher than in contests involving only homogeneous groups, leading to reduced earnings (to …

coalition groups with and without side payments. Overall, coalition groups tend to perform well for the members of the coalition …

groups, are relatively well understood, our knowledge about the effects of more elaborate internal structure on the dealings …