When doing a literature review on a topic. Frequently "studies" and/or "research" are the preferred type of article. In all the databases, you can limit to scholarly or "peer reviewed" and that helps.
Adding the word "methodology," "research," or "study" to your key word search can increase the usefulness of your search results.
(Example: "cultivation theory" and methodology)
Remember "research articles" frequently contain the following information (usually denoted by separate headings).
ABSTRACT * RESEARCH * METHODOLOGY * CONCLUSIONS * REFERENCES
