Perspectives are different frameworks from which to explore the knowledge around sustainable sanitation and water management. Perspectives are like filters: they compile and structure the information that relate to a given focus theme, region or context. This allows you to quickly navigate to the content of your particular interest while promoting the holistic understanding of sustainable sanitation and water management.
This document explains what a problem analysis tree is, in which situations you can use it and how to conduct this kind of analysis. It also contains concrete case studies of problem trees.
MDF (2005): MDF Tool: Problem Tree Analysis. Ede: MDF Training and Consultancy URL [Accessed: 10.08.2010]