Scholarly journals contain more than one type of article. In one issue of a journal, such as this issue of Nature, you may find original research articles, review articles, letters to the editor, book reviews, and more. When browsing articles in databases or in paper journals, keep the following questions in mind:
Original research articles are based on an experiment or study. The authors will report the purpose of the study, the research methodology, and results. This is a familiar structure for original research articles > IMRAD: introduction, methods, results, and discussion.
Example: Asta, M. P., Beller, H. R., & O'Day, P. A. (2020). Anaerobic dissolution rates of U (IV)-oxide by abiotic and nitrate-dependent bacterial pathways. Environ. Sci. Technol. 2020, 54, 13, 8010–8021.
Example: Fox, N. S., Veneracion, J. J., & Blois, J. L. (2020). Are geometric morphometric analyses replicable? Evaluating landmark measurement error and its impact on extant and fossil Microtus classification. Ecology and evolution, 10(7), 3260-3275.
Review articles summarize or synthesize content from earlier published research and are useful for surveying the literature on a specific research area. Review articles can lead you to original research articles.