A research paper outline is one of the most effective tools for impressive research paper writing. As research papers are documented in various formats, you will need to alter the outline to fit in the specifications of the documentation style you are using. The APA format is highly preferred by psychology and sociology for the documentation of research data. So students who are pursuing these subjects would be frequently using the APA style. Even students of other subjects might also be asked to prepare APA format research papers as it is one of the most commonly used styles for the documentation of academic research papers. Hence, it will help you, while dealing with an APA paper, to know how to prepare a research paper outline (APA format), appropriately.