As long as I have written a research paper myself, I can use it as often as I want to. True or False ?

False.

Using a research paper you have written yourself multiple times without properly citing it can still be considered plagiarism. Plagiarism refers to the act of presenting someone else's work (including your own previous work) as your own, without giving proper credit. Even if you are the author of the original research paper, you need to follow appropriate citation practices if you want to use it in subsequent works.

To avoid plagiarism, it is best to acknowledge your previous work by citing it when you reuse any portions of it in future research papers or publications. This helps to maintain academic integrity and give credit where it is due. Each time you use your research paper, you should include a proper citation indicating that it is your own work and where it was originally published or submitted.

In summary, while you can use a research paper you have written yourself in future works, it is crucial to properly cite it to avoid plagiarism and adhere to ethical academic standards.

There are differences of opinions, especially regarding the circumstances. Use the opinion presented in your reading assigment or school policy.