Answered By: Library Skills Development
Last Updated: Sep 25, 2017     Views: 122

Boolean searching is a technique that uses the terms AND, OR, and NOT in combination with your keywords to increase or decrease the number of search results.

AND narrows a search because all the terms connected by AND must be present in results.

OR broadens a search as only one key word or phrase need to exist in a document for it to be retrieved.

NOT narrows a search because it is used to exclude key words or phrases.

Using Boolean searching is a very effective way to make your searches specific. For detailed help on using Boolean searching see the Skills Plus guides under the Specific Topic, Searching Techniques.

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