Generally, all academic introductory sections should introduce readers to your topic and scope, moving readers from a broad overview to your specific, narrow focus. In an academic introduction, you should also indicate your perspective on or argument about your given topic and explain to readers why the study of your topic is important. An introduction can range from a single paragraph to multiple paragraphs, depending on the length and scope of your draft.
For research papers, in particular, you want to make sure your introduction not only meets the general guidelines above but also does the following: