Boolean operators are used to define the relationship between your search terms. Using them can help you to narrow or broaden your search results.
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Use |
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To |
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AND |
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Narrow search. Will retrieve records containing all of the words in your search. The dark blue area where the circles intersect represents your search results. Black Death AND Society would only retrieve records containing both of those terms. |
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OR |
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Broaden your search and retrieve records containing any of the words in your search. A search for Black Death OR Plague would retrieve records containing either of those terms. |
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NOT |
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Narrow search and retrieve records that do not contain the term following it. Black Death NOT Plague would exclude any records with the term plague.. |
It's important to know that databases use subject headings to organize their articles. When you know the right subject headings for your topic, you can search more efficiently. Starting out on a new topic, you won't know the subject terminology. A simple way to find them is to start with a keyword search. When you find an article title that meets your needs, look for the subject headings assigned to that article. In most cases, those subject headings are hyperlinked and will take you to a list of articles with the same subject heading.
Scholarly articles often have extensive bibliographies, also called reference lists or works cited pages. Bibliographies include references to articles, books, and other relevant literature that were published before the article. Some databases provide links to the cited references so that you can look at those articles as well, which might provide more articles for you to use in your paper.
Cited References can help you find articles that are older than the one you are reading.
An Examplle:
Look at the example to the left. If you found a relevant article from 2003, you could look at the articles in the bibliography to see where your article got the information used to support their main points. These older articles can also be useful to your research, especially if you need to write a literature review.
You can use a similar method to find newer articles, by looking at the articles who have cited your 2003 article in their bibliographies. To find out more about this method, see the tab for Times Cited references.
Now that you've picked a database, you will need to develop a search strategy for finding relevant articles. While some databases may look different, they typically have similar search features. Depending on the database you choose, you should be able to apply several of the strategies listed below.
