Many people believe that they can find anything on the Web and that everything they find is good information. The Web has a lot to offer, but the quality of the information available is very uneven. Unlike most print resources such as books and periodicals that go through a filtering process (e.g. editing, peer review), information on the WWW and the Internet is mostly unfiltered.[\q] Almost anyone can publish almost anything online, and since that information is usually not filtered or evaluated in any way, it is necessary for you to develop the skills to evaluate what you find.
This posting is meant to be a guide, that presents a series of questions that you should ask yourself in order to determine if the information you have found on the Web is reliable. If you cannot answer most or all of the following questions about the website or web page you are planning to use in your research, beware!
Essential Web page elements:
Most web pages have a similar basic structure. Here is the layout of a typical Web page and an explanation of what you should be able to find in the three main elements –
the header, body and footer:
From Horton and Lynch, Yale C/AIM Style Manual, 1st Ed. 2nd edition available at: http://info.med.yale.edu/caim/manual/contents.html
Page Element
Explanation
Header
usually contains a text title or graphic banner.
may also contain links that lead directly to other pages in the site
should contain a link to the sponsoring institution.
Body
contains the actual content, including text and links.
you can determine the purpose of the information and the intended audience by examining the information in the body.
Footer
should show the date the page was created or last updated.
should list the author’s name and/or the institution, organization, or company that is sponsoring the site.
should contain contact information for the author or sponsoring institution (e.g. e-mail or snail mail address, phone and/or fax numbers).
After identifying all of the above elements, you can then evaluate the document using the following checklist.
Evaluation Criteria
Questions to ask
Authority
Tip: look for a biography, resume or other background information often listed under an “About us” link.
Tip: follow the links back to the site’s homepage or delete the URL back to the top-level domain.
Authorship:
Who is the author of the document?
Are his/her affiliations and qualifications given? If not, how can you find out about this author?
Is there contact information for the author (address, phone number, e-mail)?
Publishing Body:
Who is the publisher or sponsoring organization?
Is there a link to or contact information for the publisher or sponsor’s home page?
Currency
Tip: look for page creation date, revision dates
Is the document dated to indicate when it was created and last revised?
Is there a copyright date listed?
Are there outdated or dead links in the document?
If references are listed, are they current?
Audience & Purpose
Tip: read the “About this site” page to determine this information.
Who is the intended audience, or for what level is the information written?
Is the intent of the information clearly stated or implied? If yes, is the information intended to inform, educate, persuade, sell, advocate or entertain?
Accuracy
Is proper grammar & spelling used?
Does it document sources of information used and are there links to any of those sources?
Are the included links relevant and appropriate for the information on the page?
Is the information verifiable? (Check other sources and compare.)
How does it compare with what you already know?
Objectivity
Tip: Be aware of the tone of the writing. Look carefully at strongly worded assertions for supporting documentation.
Is the information biased? Is it designed to sway opinion? From whose perspective is it given?
Is the author and/or publisher advertising or trying to sell you something?
Is the site sponsored by the government, an educational institution, a company or an organization that may have an agenda? (Hint: look for the domain name at the end of the address, e.g., .edu, .gov, .com, .net, or .org.)
Access & Design
Are there particular software or hardware requirements?
Does the Web page take a long time to load?
Is the site stable or is it often down or too busy to access?
Is it free or are there fees charged?
Do you have to register in order to use the site, even if it is free?
Is it easy to read & navigate?
Is it arranged clearly, logically, and usefully?
Given all the information you determined from above, is the web page or website appropriate for your research project or information requirement?
Additional Resources (see what others have to say about evaluating Internet resources): Critical Evaluation of Resources on the Internet
http://www.library.ualberta.ca/guides/criticalevaluation/index.cfm
Evaluate Web Pages Tutorial
http://www3.widener.edu/Academics/Libraries/Wolfgram_Memorial_Library/Evaluate_Web_Page...
Evaluating Health Web Sites
http://nnlm.gov/outreach/consumer/evalsite.html
Evaluating Information Found on the Internet
http://www.library.jhu.edu/researchhelp/general/evaluating/
Evaluating Internet Resources: A checklist
http://infopeople.org/resources/select.html
Evaluating Web Pages: Techniques to Apply & Questions to Ask
http://www.lib.berkeley.edu/TeachingLib/Guides/Internet/Evaluate.html
The Good, The Bad & The Ugly: or, Why It’s a Good Idea to Evaluate Web Sources
http://lib.nmsu.edu/instruction/evalcrit.html
MedlinePlus: Guide to Healthy Web Surfing
http://www.nlm.nih.gov/medlineplus/healthywebsurfing.html
Remember that the Web is not the only resource for your information and research needs.
Use books and newspaper, magazine and journal articles as well.
