Popular Press: Material written for the general public.
Scholarly Journal: Articles written by experts in academic or professional fields.
Peer-Reviewed: Articles are submitted to rigorous scrutiny by other subject experts prior to publication.
Empirical Article: Research articles describe and document research conducted by the author(s). Empirical studies are based on data derived from observation or experimentation. Research articles usually comprise an abstract, introduction, methodology, results, discussion, list of references and appendices.
Literature Review: An article in which the authors present the findings of other scholars studies. A literature review identifies major scholars and studies in a particular research area, summarizes current findings and provides a robust bibliography.
Here's a refresher of what you learned in class about the difference between empirical and literature review articles.
These databases are good sources for popular press articles. You can also use them to get at the full text of articles when you hit a "paywall" on a news website.