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 paper provides the reader a short overview of the four levels of evaluation published by Kirkpatrick in 1994.
INSTRUCTIONAL PRODUCT EVALUATION (2003): Kirkpatrick's Levels of Evaluation. United States: The University of Georgia URL [Accessed: 08.05.2012]