| Symptom | First action | Planning use |
|---|---|---|
| You have never heard of the outlet | Scan the page briefly, then open a new tab and search the publication’s name | Settle the reputation question before you read the article closely |
| The About page sounds impressive | Look for what independent sites say about the organization | Self-description shows only what the organization wants you to know |
| The article leans on an unfamiliar expert | Search the name plus the claimed expertise and check Google Scholar for citations | Confirms whether the expert has a record outside this article |
| Search results only return the site itself | Add the minus-site operator to exclude that site | Forces outside voices to the top of the results |
| Very little turns up elsewhere | Read a minimum of 3 to 5 outside sources, then judge | Thin coverage means no established reputation, so proceed with caution |
| The source looks slanted | Check how it verifies facts and corrects mistakes | Bias and credibility are separate questions |
The steps and thresholds above come from library research guides at the University of Iowa and Central Connecticut State University.
What is lateral reading? It is a technique for researching a publication, website or author for credibility, reliability, potential bias and reputation by leaving the page and seeing what other sources say about it.
If you want the wider checklist that this technique slots into, start with our guide on how to check if a news website is credible. The rest of this page covers the single habit that does the most work: stepping off the site to judge it.
What lateral reading means in practice
Lateral reading means investigating who is behind an unfamiliar online source by leaving it. According to The Chicago School library guide, readers who work this way get off the page and open many tabs in their browser, then return to the original source with what they learned. The same guide calls it one of the primary strategies used by professional fact checkers, which is a good reason to copy it.
Lateral versus vertical reading
The contrast is simple. Ohio State’s teaching resources describe lateral reading as reading across sites, and vertical reading as a deep evaluation of a single site. Vertical reading asks you to study the layout, the tone and the About page. The trouble is that all of those are controlled by the site’s owner. Lateral reading asks other people, so it is much harder for a polished design to fool you.
Where the term comes from
The lateral reading concept and the term itself developed from research conducted by the Stanford History Education Group, led by Sam Wineburg, as the Chicago School guide explains. You do not need to know the research to use the method, but it helps to know it was built around how fact checkers actually behave when they meet an unknown site.
Lateral reading and article checklists
Checklists such as RADAR are typically applied to individual articles rather than to whole websites or publications, according to the University of Central Arkansas library guide. Lateral evaluation targets the site or publication itself. Use the checklist when one article needs close reading, and use lateral reading when the outlet is the unknown.
Leave the page: the quick-scan step
Start with a short look at the page, then jump off it. The CCSU guide describes the method as taking a quick scan of the site and then leaving it to check outside sources. Do not spend your time reading the article closely first, because the guide’s point is to research the source before deciding whether to listen to anything it says.
Symptom: the About page looks convincing
The fix is to stop reading the About page as evidence. Pages and author bios are useful for finding names, but relying on them limits you to what the organization and content creators want you to know. Note the organization’s name, then take it elsewhere.
- Keep the original tab open. You will return to it once you have a judgement to apply.
- Open a new tab for each search. Several tabs side by side let you compare what different outside sources say.
- Look for what trusted sites say. The Chicago School guide frames the job as seeing what trusted sites say about the unknown source.
Search for the source, not the story
Your search should target the publication, the funder, the author or the content. The University of Iowa guide lists these as key components you can search, and says the publication is usually the best one. Searching the outlet name tells you more about its standing than searching the headline does.
Symptom: results keep sending you back to the site
Use search syntax to exclude the site’s own pages. The UCA guide gives the pattern “[search] -site:[search]”, with the example hrg.org -site:hbr.org. Swap in the outlet’s domain and every result will come from somewhere else. A search engine does this filtering quickly, which makes it the central tool for the whole method.
Symptom: the article cites an expert you cannot place
Check whether the person has citations on Google Scholar, as the UCA guide advises. If nothing shows, search the person’s name along with the expertise claimed. A genuine specialist usually leaves a trail outside the article that quotes them, and the absence of one is worth noting before you rely on the quote.
Read the results and decide
Open enough independent results to see a pattern, then make a call. The Iowa guide advises reading a minimum of 3 to 5 new sources to see what they say about your original source, and then forming a judgement about its trustworthiness once you can see a consensus.
Symptom: almost nothing turns up
Treat thin coverage as information. The same guide says that finding fewer than that range means the original source does not have an established reputation, and advises you to proceed with caution. That is not proof of fraud, but it is a good reason not to share the article or build an argument on it.
Is Wikipedia useful for checking a source?
Yes, as one place to look. The Iowa guide suggests using Google and Wikipedia to determine a consensus about a source. Use Wikipedia as a quick way to find leads, such as who owns the outlet or what others have said about it, and then confirm those leads in other independent sources instead of stopping at one page.
Symptom: the source is clearly biased
Bias alone should not end your check. According to the UCA guide, publications can have a bias and still be credible, and the process for verifying facts, correcting mistakes and encouraging accuracy is what defines a reliable source, regardless of bias. When you search, look for reports of corrections, retractions or a record of getting facts wrong, not only for labels such as left or right.
Symptom: you are unsure how hard to check
Match your effort to the stakes. The UCA guide notes that one or two wrong facts in an opinion piece are less damaging to the author than incorrect facts in a news article. If you are about to rely on a news claim, spend more time on the outside record than you would for a column you are reading for perspective.
Mistakes that undermine the method
- Judging by design. A clean layout and a professional tone are vertical-reading clues, and the site controls both. Leave the page before you decide anything.
- Stopping at the first result. One outside source is a single opinion. Collect several before you form a view.
- Letting the site search itself. If your results are full of the outlet’s own pages, exclude them with the minus-site syntax.
- Confusing slant with unreliability. Ask how the outlet corrects errors, not only which direction it leans.
- Trusting an unplaced expert. Verify the person separately from the article that quotes them.
Once lateral reading has told you whether an outlet is worth trusting, a comparison of the best fact checking websites can help you verify individual claims.
Frequently asked questions
| Question | Answer |
|---|---|
| How do I research a news source quickly? | Scan the page briefly, then open a new tab and search the publication’s name, funder or author. Exclude the site’s own pages with the minus-site operator and read what independent sources say. |
| How many outside sources should I read? | The University of Iowa guide recommends a minimum of 3 to 5 new sources before you judge the original. |
| Who developed lateral reading? | The concept and the term developed from research by the Stanford History Education Group, led by Sam Wineburg. |
| Does a biased source always fail the check? | No. Publications can have a bias and still be credible. Reliability depends on how a source verifies facts and corrects mistakes. |
| Is lateral reading the same as vertical reading? | No. Lateral reading goes across sites, while vertical reading evaluates one site in depth. |
