Why do people in rich countries not transfer more of their income to people in the world's poorest countries? To study this question and the relative importance of needs, entitlements, and nationality in people's social preferences, we conducted a real effort fairness experiment where people in...

The low productivity of agricultural crops is among the factors leading to low income and food insecurity for rural people in the Southern Zone of Tanzania. The use of improved seeds is one way of increasing the productivity of agricultural crops. It was realized that the seed supply pipeline...