A research article is a paper written by authors who either collected and analyzed their own data (primary data analysis), or analyzed data that had been collected by someone else (secondary data analysis). A research article consists of new, original work, which no one else has done before. It is not simply a summary of research that others have done—instead, it consists of the presentation of new analyses. In a research article, the authors provide background information on similar work that has been done in the area, illustrate why the current paper is important, describe the data and methods they use, present their results, and discuss the results and limitations of the study. A research article should contain the following sections— Literature Review, Data Description, Methods, Results, and Discussion.