Many authors are not aware that even using the content from their previous published paper requires proper citation. Otherwise, it will be the case of self plagiarism. Dr. Eddy explains why and how to avoid this.

1. What's the big deal about self-plagiarism? 1
What's the big deal
about self-plagiarism?
Publication Ethics - Editage Insights

2. What's the big deal about self-plagiarism? 1
Question
Dear Dr. Eddy, I recently submitted my manuscript for publication and it was rejected by the journal saying the
data is partially redundant since I have published it in the past. I agree that I used some of the data from a
previous paper because this is an extension of the same study. I would like to know why it is unacceptable to use
some of my own published data in my future publications.
Answer
I am sorry to learn about the journal’s decision on your manuscript.
A redundant publication is also referred to as self-plagiarism and is defined as a type of plagiarism in which
the writer republishes a work in its entirety or reuses portions of a previously written text while authoring a
new work. It is acceptable for authors to re-use their copyrighted works if the previously published work is
appropriately cited. However, it is considered unethical if the authors portray a previously published work as
new, when it is not.
A redundant publication could also lead to copyright infringement. Once a manuscript is accepted for
publication, the authors are often required to submit a signed copyright form to the publishers, wherein the
author guarantees that the work is original and that no part of it has been previously published. Though
authors can quote from their previous publications with the relevant citations, duplicate publication of
previously reported data is considered unethical.
According to guidelines issued by the Committee on Publication Ethics (COPE,) journal editors should
consider retracting a paper if it is found to be redundant. To prevent submission of redundant manuscripts,
individual journals follow specific guidelines. For example, the New England Journal of Medicine insists that
authors should submit to the editor copies of any published papers or other manuscripts in preparation or
submitted elsewhere that are related to the manuscript to be considered by the journal.
In the case of your manuscript, which is based on one of your earlier published studies, it is important that
you provide citations for all references to your previous work. Further, to avoid being considered guilty of
self-plagiarism, it would be advisable to add a note to the editor in the cover letter, informing him/her of
the previously published study that forms the basis of the current study.
TAGS: plagiarism self-plagiarism redundant publication
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3. What's the big deal about self-plagiarism? 1