SIFT (The Four Moves for Information Evaluation)
When encountering information online, first ask 'Do we know what we are looking at?' rather than 'Is this true?' SIFT is a quick heuristic (Stop, Investigate the Source, Find Other Coverage, Trace the Claim to the Original Context) to gain essential context before deeper analysis.
THE IDEA
SIFT
When encountering something online, Caulfield and Wineburg suggest asking “Is this true?” only after establishing “Do we know what we’re looking at?” A little context can help determine whether a claim deserves closer investigation and where to look next.
- Stop. Pause before sharing or reacting. Notice whether emotion or urgency is driving you.
- Investigate the source. Look outside the page for information about the source’s expertise, funding, reputation, and purpose.
- Find better coverage. See what other reliable sources say about the claim, preferably sources that are independent of the original.
- Trace the claim to its original context. Find the study, document, image, or recording behind it and check whether the version you saw represents it accurately.
The authors contrast these moves with checklist approaches such as CRAAP: Currency, Relevance, Authority, Accuracy, and Purpose. They argue that a polished website can satisfy superficial checks while obscuring important context. In their example, the International Life Sciences Institute has professional presentation and academic connections, while investigation of its food-industry funding raises questions about its treatment of sugar and obesity.
The lesson is to investigate the source and evidence behind a particular claim. A polished appearance does not establish credibility, and identifying a funding connection is the beginning of that inquiry rather than a complete verdict on every claim.
When to use it
Verifying the credibility of an unfamiliar news website before sharing an article.
Checking a health claim from a corporate‑funded organization that looks authoritative on the surface.
Assessing a viral video or meme that makes a strong political or scientific claim.
Teaching students a quick, practical method to navigate the flood of online information.
FROM THEORY TO EVERYDAY LIFE
In practice
Example: Evaluating a Viral Health Claim
You see a post on social media claiming that ‘eating sugar is as harmful as smoking’. Instead of asking ‘Is this true?’, you apply SIFT:
- Stop – don’t share immediately.
- Investigate the Source – Who posted it? A personal blog or a credible health institution?
- Find Other Coverage – Search for the claim on fact‑checking sites or major news outlets.
- Trace the Claim – The original might be a study lacking context; check the paper’s methodology and population.
Example: Using SIFT on the International Life Sciences Institute
Caulfield and Wineburg use the International Life Sciences Institute to show why presentation alone is an inadequate credibility test. Applying SIFT means checking its funding and relevant expertise, finding independent coverage of the specific health claim, and tracing that claim to its evidence. This is more informative than assuming that a professional website settles the question.
A MOMENT TO REFLECT
Put it to work.
Think of a recent piece of news you encountered online. How would using SIFT have changed your initial reaction?
What are the potential consequences of relying only on surface signals (e.g., professional look, dot‑org domain) when evaluating information?
Pick a controversial claim on social media and walk through the four SIFT moves. What did you discover?
Often confused with
CONTINUE THE CONVERSATION
Source texts
- Verified How to Think Straight, Get Duped Less, and Make Better Decisions about What to Believe Online (Mike Caulfield, Sam Wineburg)