I'm aware that it's a violation of terms for most publishers to submit the same article to more than one journal, but I frequently see authors whose papers seem very similar, particularly papers released in a single year. In my field, neuroscience, this is particularly true about conference papers; one researcher will often have numerous posters/conference papers about seemingly the same topic. What are the guidelines for acceptability regarding this type of behavior?

  • 7
    "Same topic" does not imply "exactly the same results". This depends largely on which fields you're referring to: many journal papers in computer science would be redundant since they are journal versions of works published in the proceedings of an earlier conference. In mathematics, it's more common to talk about already published work at a conference, whereas in computer science we usually present new work. I'm sure other fields abound with their share of examples. Commented Feb 15, 2012 at 10:42

4 Answers 4

  1. According to the Committee on Publication Ethics Guidelines on Good Publication Practice, the term "redundant publication" is defined this way:

    "Redundant publication occurs when two or more papers, without full cross reference, share the same hypothesis, data, discussion points, or conclusions." In addition, it states: "(1) Published studies do not need to be repeated unless further confirmation is required. (2) Previous publication of an abstract during the proceedings of meetings does not preclude subsequent submission for publication, but full disclosure should be made at the time of submission. (3) Re-publication of a paper in another language is acceptable, provided that there is full and prominent disclosure of its original source at the time of submission. (4) At the time of submission, authors should disclose details of related papers, even if in a different language, and similar papers in press." Note that (2) states that it is generally acceptable to present a paper in a conference and then later publish exactly the same paper in a journal, as long as you mention to the editor that the paper has been publicly presented.

  2. According to the paper Science journal editors’ views on publication ethics: Results of an international survey,

    "Breaches of publication ethics such as plagiarism, data fabrication and redundant publication are recognised as forms of research misconduct that can undermine the scientific literature." It also stated that redundant publication is an unethical practice. Of 16 ethical issues studied, redundant publication had the highest severity (that is, it caused editors the most concern---more than plagiarism or data fabrication).


Rather than asking what's acceptable, I think it's worthwhile to step back and think about the purpose of scientific publication. Your goal in publishing should be to disseminate useful ideas, not to create a publication record. If you have ten papers that are all very similar, it's hard for people to learn about your ideas because they won't have time to read all those papers. Just write one good one.

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    While I fully agree with you, you clearly are not at a university whose administration is full of bean counters. Commented Feb 16, 2012 at 1:31
  • 2
    True. My university really values quality over quantity. The Provost recently advised us that it's better not to publish mediocre papers, even if the alternative is publishing less. Commented Sep 20, 2012 at 15:57
  • Alas, if only academia leaned toward quality, and not quantity!
    – Paul
    Commented Jan 17, 2013 at 5:28

Personally, I have no qualms with submitting the same talk to multiple conferences; however, in my field (Chemical Engineering), we don't really do conference proceedings. Therefore, it's not such a big deal to present a work more than once; it's being given to different audiences that might not otherwise see the work, and it's not going into the publication record multiple times, so there really aren't any ethical violations going on.

However, in a field where conference papers are required to give a talk, then ethical rules demand that you disclose if a paper has been accepted previously. If you've changed the material enough, or introduced enough new material, then it's a little bit more of a grey area. But it's still better to err on the side of caution than to get caught out.

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    Essentially the same here (chemist). Conference proceedings papers don't earn you anything in chemistry (they often take about everything, and some even try to force you to submit a proceedings paper instead of having peer review and accepting only good papers). Things are different if there's a special issue about a conference in a proper journal and has normal peer review. Consequently, that's where the field moves.
    – cbeleites
    Commented Nov 15, 2012 at 22:45

There are a few things to keep in mind:

  • Submitted talks vs. invited talks. Many researchers will have given many talks on a subject, but if most of them are invited talks, the reason they're duplicates is because conference organizers have essentially asked for duplicates.
  • I'd argue it isn't ethical to submit the same presentation, but a topic is a wide ranging thing. Heck, even a single study has a lot of aspects to it, and many conference presentations have less content than a single paper. For example, you might have a presentation at one conference that's highly technical, another for a different audience that's more practical/applied, etc. Those are different talks.
  • Consider what you want to get out of it. Unless your field is one of those where presentations trump papers or themselves generate papers (CS comes to mind), presentations aren't that big of a deal on a CV such that an extra one or two will really put you over the edge. In my field for example, everyone knows there's certain conferences that will essentially accept as many talks as they have spaces to fill (and they have many spaces to fill), so as long as your science isn't egregiously wrong, you're probably going to get in. What you do get out of that is good contacts, and good advice. If you keep repeating the same thing over and over, your return on "investment" starts to dive.
  • If your talk is going to be spun into a paper via conference proceedings or the like, be doubly cautious, and make sure if you are double-dipping in an experiment or the like that the resulting papers are clearly different as well. I don't know anyone who doesn't frown on duplicated papers, and more than one venue that will smack you down hard for trying to play a game like that.
  • 6
    Presentations do not trump papers in computer science; conference papers trump journal papers.
    – JeffE
    Commented Feb 17, 2012 at 12:30

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