Evaluating Sources of Information

Which sources are "good"?


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Once you have found sources for your research, the next step is to evaluate them: most articles and books are written from the author's or publisher's point of view. For some sources, the point of view can be obvious (e.g., National Rifle Association, National Organization for Women, etc.). But what point of view might you find in the following?:

  • an opinion on universal health care by Norman Podhoretz of the American Enterprise Institute

  • a publication on Central America from the Christic Institute

  • Articles from The Nation or from National Review

What, if any, are the biases of these sources? What is the slant they put on the information in their publication(s)? Before accepting information as truth, consider the following factors which will help you examine resources in terms of your own research needs:

Authorship
What are the author's credentials which gives credibility in this field? What is his/her area of expertise? Is the author affiliated with an organization or institution? If possible, try to determine the author's bias or perspective on the topic. Has he/she been cited in sources by others in the field? Biographical resources (e.g., Who's Who books, located in the library), and information in the publication itself, may help you determine the author's credentials.

Publisher/Journal
Identify the publisher and try to determine whether it is a reputable or scholarly publisher. If the information is in a serial, determine whether it is a scholarly journal or a popular magazine: who is the intended audience?; are sources of information cited?; are credentials of authors given?

Date of publication/Currency
When was the resource published? Do resources for your particular topic need to be current? Is the information contained in the resource current enough to be accurate and useful?

Content
Try to determine the purpose of the information and evidence of bias, its intended audience, its suitability for your purposes, and its comprehensiveness. Check for accuracy: can the information provided be verified elsewhere? Note whether the information is supported by evidence and appears to be valid.

Reliability
Is the information factual or is it just opinion? Can it be backed up by other sources?

Suitability/Relevance
How readable is the text? Can I read or understand the information? What is the purpose of the resource? Is it to entertain, to inform, or to promote a viewpoint? Is the information clearly presented? Is the information from this source pertinent to my need?

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The following reference tools, located in the library, can be used to find background information on the sources or authors you located in your research (who finances them, political platforms with which they're aligned, etc.):

  • Biography and Genealogy Master Index (Reference Z5305 U5 B57)
    online at: Biography Resource Center

  • Biography Index (Reference Z5301 .B61)

  • Encyclopedia of Associations (Reference HS17 E5)
    online at: Associations Unlimited

  • Magazines for Libraries (Latest edition in Reference Z6941 M23)

  • From Radical Left to Extreme Right: a Bibliography of Current Periodicals of Protest, Controversy, Advocacy, or Dissent, with Dispassionate Content-Summaries to Guide Librarians and Other Educators (Reference JK1726 .S5 1987)

Evaluative information can also be found online, such as in a search of articles through the Academic Search Complete database.

EXAMPLE 1: Let's say you found an article by Michael Kinsley, "War and Powers," in the New Republic and you'd like to know more about the author and his views. Search the Academic Search Complete database using the author in a "People" search:
    People:   kinsley, michael
Display and then read the text of any of the relevant articles to find out more on Kinsley.

EXAMPLE 2: Use the web to find out more about an interest group or association from their own webpages. Either search for a group by name, or use the following sites to find out which groups there are on a particular issue:

    National Political Index     Provides links to political parties and other political groups.

    Project Vote Smart's Issue Organizations     Provides links to interest groups related to each issue.

    Lobby Group Web Sites     Provides links to lobby groups.

    Political Resources on the Net     Listings of political sites available on the Internet sorted by country, with links to Parties, Organizations, Governments, Media and more from all around the world.

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Author: Janet Martorana
Updated: August 2008

Direct questions or comments about this page to the author or to webmaster@library.ucsb.edu.