Lateral reading is a strategy used to evaluate the credibility of online information by verifying it across multiple sources. Instead of staying on a single webpage and reading vertically (top to bottom), lateral readers open new tabs to search for information about the source, author, or claim. This method helps determine whether the content is trustworthy by comparing with what other reputable sources say.
This chapter from the feely available book Web Literacy for Student Fact Checkers explains the process of reading laterally and how it enhances your research.