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SIFT Method for Evaluating Online Sources

Whether you use online sources (news articles, social media posts, videos, memes, etc.) for research purposes or your own personal knowledge, it is extremely important to know how to determine if a source is both appropriate and credible.

What is SIFT?

SIFT is an online evaluation strategy, developed by digital literacy expert Michael Caulfield (Washington State University Vancouver), to help you judge whether or not online content can be trusted for credible and reliable information. SIFT is quick and simple 4-step process, and can be applied to all types of online content.

SIFT stands for:





SIFT Method logos

Why use SIFT?

SIFT is a quicker, more effective way to evaluate online content than traditional “checklist” approaches (such as "the CRAAP Test").

Some checklist questions you might ask yourself when initially arriving at a webpage:

  • Does this look professional?
  • Are there spelling errors?
  • Is it a .com or a .org?
  • Is there scientific language?

In today’s world, asking yourself these kinds of questions is no longer enough. Why?

  • Anyone can easily design a professional looking webpage and use spellcheck
  • .com or .org does not always reflect the credibility of the content
  • Scientific language does not always reflect expertise or agenda of the content

Additionally, checklist methods often require students to evaluate too many different types of criteria, and can take dozens of steps (and too much time) to check a single source. 

Additional Resrouces

Online Verification Skills — Video 1: Introductory Video (Mike Caulfield):


Fake Out Icon




Fakeout is an interactive lesson that tests your ability to detect online disinformation (aka, "fake news"). 
Try answering all 10 questions, both before and after learning about SIFT, and see how your evaluation skills have improved!

Further Reading:


Note: This SIFT method guide was adapted from Michael Caulfield's "Check, Please!" course at The text and media is (for the most part) CC-BY, and free for reuse and revision. The authors ask that people copying this course leave this note intact, so that students and instructors can find their way back to the original (periodically updated) version if necessary. 

The SIFT LibGuide at (Rio Hondo College), and the OER book Introduction to College Research (Butler, et al.) were also adapted in the creation of this guide.