Most of the books and articles you find through the library undergo a lengthy review and publishing process. Contrast this to the open Web where anyone can publish anything and you see why evaluating your sources is an important part of research.
Original CRAAP Test created by Chico State Librarians. Plus questions inspired by the work of Angela Pashia.
Your job as a researcher is to find out what experts (people with advanced training on a topic) have concluded about your topic and use that evidence to argue what you believe to be correct. The most credible resources are peer reviewed, which are resources written by experts and reviewed by other experts, i.e. their "peers."
For more on determining credibility, check out this video from North Carolina State Libraries.
The CRAAP Test is a great tool for basic evaluation of a source. However, webpages can be difficult to evaluate because you cannot always find the information you need on the page itself. When this happens, you need to leave the page and do some additional research about the organization, the author, or the claims being made.
Here are four ways to fact check sources that go beyond the CRAAP test:
Adapted from Web Literacy for Student Fact-Checkers
by Michael Caulfield (ch. I. sect. 2).