FTS: A Matter of Curiosity: Evaluating Sources

Keep sight of your focus as it evolves and deepens. You don't need to find all of the available sources, but you do want good ones that answer the questions you have posed for yourself and that serve as convincing evidence for your reader. Your sources are your "expert witnesses" - so make sure you find sources written by experts on your topic.

In academic scholarship, experts tend to be scholars in the field. They have studied the field extensively, have advanced degrees, and are writing for other experts in the field. Expertise looks different in different contexts, however. Talk with your professor or a librarian about your sources for more help.

As you search, keep track of the most promising sources and then look at them closely, asking yourself these questions.

• is it relevant? Does this source help me accomplish my task?
• is it timely? Is it too dated? is it a primary source from the historical period I'm interested in?
• is it written for an appropriate audience? Has it repackaged information in a way that oversimplifies it? will my reader expect more technical or scholarly information than this?
• is it authoritative? Are there clues that tell me why I (and my reader) should rely on this source? Why does the author present this information, and does that purpose suggest a particular bias? Does it analyze dispassionately - or advocate for a particular stance? (Advocacy isn't bad - but you may have to see how others approach the issues.
• does it makes sense? Does the information hang together logically? Does it provide evidence for its claims that you find persuasive? 

When you aren't an expert, it may seem daunting to evaluate the work others have published, but a book's table of contents or an article's opening paragraphs will help establish relevance. The language it is written in will help you decide if it is scholarly enough and yet not too highly technical for your purposes. Information given about the author might help you decide how much an authority he or she is. For Web sources, follow links to information "about this site" or to an author's home page, or shorten the URL to everything up to the first slash to see what its parent page looks like. When in doubt, check with your instructor.

Compare: In addition to looking at the quality of individual sources, compare them so that you can see where there are differences and conflicts. Even if you are heading toward a particular conclusion, you want to discuss alternative perspectives so your reader gets the big picture.

Corroborate: If you feel as if you're going out on a limb, try to corroborate the information you want to use in another source. A reference librarian can help you do that.

The term primary source is defined differently by various disciplines. In the humanities, a primary source is a historical document, such as a diary, memoir, a work of art, a news account published when an event was fresh - something from the historical period under examination. In the sciences, a primary source is a scientist's write-up of their research that includes their methods and results, as opposed to science journalism or a summary of research (a "review article") that has been conducted to provide an overview of research on a given topic.

A secondary source is one that has already been analyzed by someone else. Moving even further from the unfiltered event is a tertiary source such as a textbook or encyclopedia, that summarizes knowledge in general terms.

Using primary sources, whether in science or the humanities, helps a researcher get as close as possible to the subject under examination. Using primary sources can be a good way to point your reader to the raw materials of your ideas and provide an opportunity for you to do your own, original analysis.

For more about primary sources, check out our guide to primary sources available in our library.

Quite often you will be expected to use "scholarly" or "peer reviewed" or "academic" sources. How can you tell whether a source is scholarly? Look for these indicators.

• The author is a scientist or scholar, not a journalist. Usually you can find some note about where the author works, and more often than not it's at a college or university. The author usually has the highest degree in their field (like Ph.D.).
• The audience is other researchers, scientists, or scholars, (as well as students in a given field), so the language is fairly complex and assumes a level of sophistication. 
• It includes references to the work of other researchers. Look for bibliographic notes and/or a works cited page.
• Scholarly sources are usually published by academic publishers (like Oxford University Press); articles appear in scholarly journals, often with titles like Journal of ....

Though many databases let you limit a search to scholarly or peer reviewed articles, those limiters aren't foolproof. As an example, they will include book reviews, which are not reporting original research. Take a look at "Anatomy of a Scholarly Article" from North Carolina State University Library.

Peer review means the source has been reviewed prior to publication (usually without the reviewers knowing who wrote the source and vice versa); reviewers will then recommend if the work should be published. Many - but not all - scholarly sources have been peer reviewed. To check if your scholarly article has been peer reviewed, you can visit the journal's website.