The problem with judging a page from the inside
When you land on an unfamiliar website, it is natural to read it closely and decide whether it feels trustworthy. The design looks professional, there is an “About” page, the writing is confident, the address ends in a respectable-sounding word. The difficulty is that all of these are controlled by the site itself. Anyone can build a polished page, and a persuasive one can be built on purpose.
Researchers who study how people evaluate web pages have described a contrast between two approaches. Readers who stay on the page and examine it closely tend to be misled by surface features. Readers who quickly leave the page to find out what others say about it tend to reach better judgments. The second approach is called lateral reading, a term introduced by a research group at Stanford. The label comes from moving sideways across the web instead of reading downward through one page.
The core idea
Open a new tab and search for information about the source, then return and decide how to read what it says. You are not trying to settle whether the page is right. You are first trying to learn who is behind it and how others regard it.
This often takes less than a minute, and it saves you from spending effort reading something that turns out to be unreliable for your purpose.
Three questions to ask
A commonly taught set of questions can guide the search:
- Who is behind this information?
- What is the evidence for their claim?
- What do other sources say?
You do not need a detailed answer to each. Often one or two are enough to decide whether a source deserves more of your time.
Steps in practice
Pause on the name. Note the site or organization name, and the author if there is one. Do not rely on the site’s own description of itself.
Search for the name in a fresh tab. Add words such as “about,” “who runs,” or “reviews,” or simply search the name alone. Look at results that are not owned by the site. Reference works, news coverage and independent commentary are useful. Remember that the top result is not necessarily the most reliable, so look at more than one.
Look for ownership, funding and purpose. Is it a news outlet, a lobbying group, a company selling something, a personal blog, a government body, a satire site? None of these categories is automatically trustworthy or untrustworthy, but knowing the type changes how you read. A company’s page about its own product is a fine source on what the product claims to do and a weaker one on how well it works.
Check what others say about the specific claim. If a page makes a surprising statement, search for the claim itself. See whether independent outlets report it, whether it is disputed, and whether it traces back to an original source. A claim reported only by a single site is a reason for caution.
Go back and read with context. Once you know who is speaking, you can read the page knowing what to expect and what to question.
Why it works
Judging from the inside relies on cues that are easy to fake. Judging from the outside relies on the view of people and organizations that have no stake in making the page look good. It also fits how the web is actually structured: reputations form through links, mentions and reporting by others, and you can see this record if you step outside the page.
Lateral reading is also practical because it does not require expert knowledge of the topic. You can learn a good deal about a source without understanding the subject matter.
Limits and cautions
- Searching only brings up what is findable. A new organization may have little history, which is not itself damning.
- Search results can themselves be manipulated or crowded with promotional material. Compare several independent sources.
- A reputable source can still be wrong on a particular point, and a little-known one can be right.
- Be cautious about relying on one summary of a site’s reputation, including community-edited encyclopedias. They are a useful place to begin, and using Wikipedia for research works best when it leads you onward to other material.
- The method judges sources, not individual facts. For specific statistics you still need the original data.
Combining with other habits
Lateral reading pairs well with other checks. For an image, a trace of where it first appeared, as covered in reverse image search, addresses a different question: whether it has been reused. For scholarly sources, the guide to reading papers describes how to judge the study itself. Lateral reading helps with the earlier question of whether the publisher is what it claims to be, including the kinds of site that appear in discussions of misinformation spotting.
Browser features such as a second window or well-organized browser bookmarks and tabs make this easier. Keeping the original page open while you research it means you can switch back without losing your place.
A short example
Suppose you find a polished site publishing articles about a health topic, signed by an organization with an impressive name. Instead of reading further, you open a new tab and search the organization’s name. You find that it is funded by a company that sells related products and has no connection to any medical body. That does not prove the articles are wrong, but it tells you to treat them as promotional and to check any claims against neutral, established sources. This example is hypothetical, but the pattern is common.