The glossary provides short definitions of some of the key terminology for our work.

We hope that as the website grows, so too will the glossary of terms. Definitions are provided with reference to the source material and where possible a link to the original source.

If you would like to write an entry for the glossary or suggest a term to be added please contact us using the contact us form or tweet us using #ImpactsHub.

Impact Assessment

Impact Assessment simply defined is the process of identifying the future consequences of a current or proposed action. The “impact” is the difference between what would happen with the action and what would happen without it.

(International Association for Impact Assessment, 2009, ‘What is Impact Assessment?’, URL:

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