The steps of SIFT emphasize re-contextualizing the information presented in the source you're reading. For scholarly articles, it's also important to pick apart the article's own evidence, arguments, and conclusions.
It's still a good idea to investigate the source of the article you're reading. Focus on the authors of the article and on the journal that published the article:
An important part of evaluating scholarly writing is determining how it aligns with or contradicts other articles on the same topic. You want to make sure you can identify all of the voices or perspectives within a scholarly conversation--this is part of your responsibility as a researcher. Read widely and consider:
Often, this work has been started for you. Scholarly articles typically have literature review or background sections that contextualize the original research or analysis presented in the article. See if you can track down a few of the other articles that are cited in those sections.
For scholarly articles, we can think of "tracing claims" as verifying that the authors' conclusions stem directly from their results. Scholarly articles will typically share their research methods and results, and then analyze the raw data of their research (usually in sections titled "Discussion"). As you read, ask yourself:
If you're reading a scholarly article from a humanities field, you won't find clearly defined sections that describe methods, results, and analysis. You might instead examine the primary sources (literature, historical documents, artwork, etc.) that the article analyzes, or see if you can track down the other analysis or commentary that the article uses in support of its own claims.