If you want to learn more about PSIA, check also the World Bank's PSIA website.
Poverty and Social Impact Analysis (PSIA) and Poverty Impact Assessment (PIA) are recently developed tools for analysing the distributional impacts of policies, programmes and projects on the wellbeing of the population, with particular focus on the poor and vulnerable. Both approaches provide a comprehensive framework for analysis while drawing on a wide range of well established approaches and tools covering economic, social, political and institutional issues. The International Poverty Centre (IPC) is administering a joint UNDP-World Bank Project on PSIA. The overall objective is to promote capacities in developing countries for analytical work on the impact of national policies and use these results to influence poverty reduction strategies. This involves adjusting policy design in light of the impact of policies on poor women and men, and providing evidence to inform national policy dialogue.