Duplicate publication, multiple publication, redundant publication or self-plagiarism refers to publishing the same intellectual material more than once, by the
author
In legal discourse, an author is the creator of an original work that has been published, whether that work exists in written, graphic, visual, or recorded form. The act of creating such a work is referred to as authorship. Therefore, a sculpt ...
or
publisher
Publishing is the activities of making information, literature, music, software, and other content, physical or digital, available to the public for sale or free of charge. Traditionally, the term publishing refers to the creation and distribu ...
. It does not refer to the unauthorized republication by someone else, which constitutes
plagiarism
Plagiarism is the representation of another person's language, thoughts, ideas, or expressions as one's own original work.From the 1995 ''Random House Dictionary of the English Language, Random House Compact Unabridged Dictionary'': use or close ...
,
copyright violation, or both.
History
In a print-only era before modern
discoverability Discoverability is the degree to which something, especially a piece of content or information, can be found in a search of a file, database, or other information system. Discoverability is a concern in library and information science, many aspects ...
via the internet and
digital search and before
systematic review
A systematic review is a scholarly synthesis of the evidence on a clearly presented topic using critical methods to identify, define and assess research on the topic. A systematic review extracts and interprets data from published studies on ...
s,
meta-analyses
Meta-analysis is a method of synthesis of quantitative data from multiple independent studies addressing a common research question. An important part of this method involves computing a combined effect size across all of the studies. As such, th ...
, and
citation indexes
A citation index is a kind of bibliographic index, an index of citations between publications, allowing the user to easily establish which later documents cite which earlier documents. A form of citation index is first found in 12th-century Heb ...
existed, despite a few rudimentary
journal club
A journal club is a group of individuals who meet regularly to critically evaluate recent articles in the academic literature, such as the scientific literature, medical literature, or philosophy literature. Journal clubs are usually organized aro ...
s, it was likely for readers who subscribed to journals in one city, region, or specialty, to have only sporadic contact with journals from other places or specialties. Thus, redundant publication could serve a valid purpose analogous to the way that various newspapers in different cities and countries often report news items from elsewhere, ensuring that people in many places receive them despite that they do not read multiple periodicals from many other places. However, as discoverability increased in the 20th century and the aforementioned concerns arose, critical views of redundant publication, beyond merely reproaching vanity, took shape.
A formalization of the policy of disallowing duplicate publications was given by
Franz J. Ingelfinger, the editor of ''
The New England Journal of Medicine
''The New England Journal of Medicine'' (''NEJM'') is a weekly medical journal published by the Massachusetts Medical Society. Founded in 1812, the journal is among the most prestigious peer-reviewed medical journals. Its 2023 impact factor w ...
'', in 1969. He coined the term ''
Ingelfinger rule'' banning republications in the journal. Most journals follow this policy today. The ''
BMJ'', for example, requires copies of any previous work with more than 10% overlap of a submission to be submitted before approving a work for publication.
[Elizabeth Wager. ''Getting Research Published: An A to Z of Publication Strategy''. Radcliffe Publishing, 2010] However, there is at least one form of publishing the same article in multiple journals that is still widely accepted, which is that some medical societies that issue joint
medical guidelines will
copublish those guidelines in both of the societies' official journals; for example, joint guidelines by the
American Heart Association
The American Heart Association (AHA) is a nonprofit organization in the United States that funds cardiovascular medical research, educates consumers on healthy living and fosters appropriate Heart, cardiac care in an effort to reduce disability ...
and the
American College of Cardiology are usually published in both ''
Circulation'' and the ''
Journal of the American College of Cardiology''. This type of dual publication is analogous to
co-editions of a book.
With the advancement of the internet, there are now several tools available to aid in the detection of
plagiarism
Plagiarism is the representation of another person's language, thoughts, ideas, or expressions as one's own original work.From the 1995 ''Random House Dictionary of the English Language, Random House Compact Unabridged Dictionary'': use or close ...
and multiple publications within biomedical literature. One tool developed in 2006 by researchers in
Harold Garner's laboratory at
University of Texas Southwestern Medical Center at Dallas was Déjà Vu,
an open-access database containing several thousand instances of duplicate publication.
Criticism
Multiple submission is not plagiarism, but it is today often viewed as academic misbehavior
because it can skew
meta-analyses
Meta-analysis is a method of synthesis of quantitative data from multiple independent studies addressing a common research question. An important part of this method involves computing a combined effect size across all of the studies. As such, th ...
and
review article
A review article is an article (publishing), article that summarizes the current Status quaestionis, state of understanding on a topic within a certain discipline. A review article is generally considered a secondary source since it may analyze ...
s
and can distort
citation index
A citation index is a kind of bibliographic index, an index of citations between publications, allowing the user to easily establish which later documents cite which earlier documents. A form of citation index is first found in 12th-century H ...
es and
citation impact
Citation impact or citation rate is a measure of how many times an academic journal article or book or author is cited by other articles, books or authors.
Citation counts are interpreted as measures of the impact or influence of academic work a ...
by
gaming the system to a degree. It was not always looked upon as harshly, as it began centuries ago and, besides the negative motive of vanity which has always been possible, it also had a legitimate motive in reaching readerships of various journals and books that were at real risk of not otherwise overlapping.
Publication of the same or overlapping research in both English and the local language in different journals should not be interpreted as a duplicate publication. There is still a large proportion of doctors and other professionals in many countries who have limited access to international journals and many lack language skills in English. Therefore, publication of the same or overlapping research in different languages should not be considered double publication since it aims to reach different groups of readers and contribute to a more effective dissemination of knowledge.
Journals sometimes choose to republish seminal articles, whether from their own past volumes, from other journals, or both. Re-publication serves the goal of bringing important information to new readerships, which makes it analogous to some instances of duplicate publication on that score. However, it is different from duplicate publication in the respect that there is no element of merely gaming the system of citation impact. Republished articles are clearly labeled as such, allowing them to be recognized as such in
citation analysis.
See also
*
Self-plagiarism
References
{{reflist
External links
Text Recycling Guidelines
Academic publishing
Publishing
Academic terminology