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Not all of the information you will need comes solely from journal articles. Furthermore, you still have to evaluate scholarly articles. The databases merely give you access to content, but not all journals are the same, and some articles may be weaker than others.
What is the focus of the journal the article is published in?
Who are the authors?
When was the article published? Is it too old for your intended use?
What questions did the authors explore? What did they try to learn?
How did the authors conduct their study? What methodology did they use?
How many people participated in the study? Who are the participants? Do these participants reflect the population you had in mind?
What conclusions did the authors draw from their study?
What kinds of sources did the authors use for their literature review?
How much does the article help you learn?
What does the article help you learn? What questions does the article help you answer?