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JMVRA Home Journal Blog Plagiarism in Research: Types, Detection & Thresholds

Plagiarism in Research: Types, Detection & Thresholds

The types of plagiarism, how similarity is measured, why 15% is a common threshold and legitimate ways to reduce a similarity score.

TypeJournal Guide AccessFree to read Published byJMVRA ISSN2984-8911

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  • ISSN2984-8911
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  • EstablishedJune 2023
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Many authors picture plagiarism as a single act, namely copying another person's sentences. Yet similarity software and editorial review pick up several separate patterns, and authors sometimes fall into these by accident while sincerely trying to behave properly. Knowing each pattern makes problems in your own draft easier to spot.

Plagiarism in research papers. Direct copying: Text copied without quotes. Paraphrase plagiarism: Reworded without credit. Self-plagiarism: Reusing your own text uncited. Similarity score: Matches counted, not judged. 15% threshold: JMVRA's limit, checked before review. Fix properly: Quote, paraphrase, cite. JMVRA: transparent, double-blind peer review · open access CC BY 4.0 · ISSN 2984-8911 ₹971 INR / $41 USD only after acceptance, up to 5 authors · Crossref DOI on request
The kinds of plagiarism, the way similarity is measured and honest ways of lowering it — tap to view at full size.

Forms of Plagiarism That Authors Often Fail to Recognise

  • Direct copying — lifting text exactly as written with no quotation marks or citation
  • Poor paraphrasing — exchanging some synonyms yet leaving the source's sentence structure untouched
  • Self-plagiarism — recycling a large part of your earlier published text without telling readers
  • Mosaic plagiarism — stitching together phrases from several sources with insufficient credit, even when no one sentence is copied entire
  • Uncited data or figures — taking a table, chart or dataset from elsewhere and not acknowledging the source

What Really Happens in Similarity Checking

Software such as Turnitin and iThenticate checks your manuscript against a huge store of published papers, web content and work submitted earlier, and then reports a similarity percentage that shows how much of the text matches known sources. That figure alone is not a finding of plagiarism; it gives a human reviewer a place to start when examining the flagged sections.

Before any submission goes to a reviewer, JMVRA screens it using Turnitin/iThenticate. The complete process is described in Documentation.

Why 15% Is a Typical Limit and Not a Magic Figure

Like many journals, JMVRA asks for a similarity score below 15% before a manuscript goes on to peer review. The figure is not a harsh arbitrary rule; it reflects the fact that some matching text is unavoidable and legitimate. Standard methodology wording, correctly quoted material, common technical terms and reference list entries all show up as "matches" even in wholly original work. Going through each highlighted match shows which ones need action and which can safely stay.

Cases Where a High Score Is Not Plagiarism

Flagged AsOften Actually Is
Strong match in the references sectionConventional citation formatting that mirrors the reference lists of other papers
Match within the methodology descriptionCommon stock phrasing for established procedures (e.g. familiar statistical test descriptions)
Match in quoted passagesMaterial that is quoted and cited correctly; the tool rightly marks it as a match, yet it raises no ethics concern
Overlap with your own earlier paperIt should be disclosed as related or earlier work, and is not automatically self-plagiarism when cited correctly

That is precisely the reason a person examines the report instead of letting an automatic cutoff alone decide on rejection.

Honest Ways to Lower Your Similarity Score

  • Paraphrase properly by rebuilding the sentence with your own framing instead of only swapping synonyms, and then cite the source
  • Put quotation marks and a citation around every passage you retain word for word
  • When you build on your earlier work, declare and cite it instead of quietly reusing the text
  • Let the literature review reflect your own analysis: summarise and compare the sources, and avoid linking quotations one after another

Consequences of Confirmed Plagiarism

If plagiarism is confirmed in a manuscript before publication, it is sent back for revision or rejected, depending on how serious it is. When it is confirmed after publication, it is handled as research misconduct under JMVRA's COPE Ethics Policy, which may lead to retraction; the full flowchart is documented there.

At-a-Glance Checklist

  1. Sources creditedAll of them
  2. Quotes flaggedVerbatim text
  3. Previous work citedYour past papers and thesis
  4. Report reviewedEvery match
  5. Below 15%Prior to submission

Avoiding Plagiarism as You Write

  1. Record notes in wording of your own — and enclose anything copied within quotation marks, citing its source at once
  2. Log sources while reading — in a reference manager, so no citation is forgotten afterwards
  3. Draft from your notes rather than from open papers — this preserves your voice and structure
  4. Reference your previous work — reusing published text of your own with no citation amounts to self-plagiarism
  5. Run a similarity check prior to submitting — and go through each highlighted match instead of looking only at the percentage

Paraphrasing Software and AI

Hiding copied text is misconduct. Applying paraphrasing tools, synonym spinners or AI rewriting to conceal copied passages from similarity software counts as plagiarism, and journals are getting better at spotting it through awkward wording and shifts in meaning.
AI and similarity
UseAcceptable?
Correcting the grammar of your own textYes, and declare it if the journal asks for that
Writing notes that summarise papers you have readYes, as an aid to your own understanding; cite the sources
Rewording another person's text to escape detectionNo — that is plagiarism
Producing references without verifying themNo — citations invented by AI are a grave mistake

Refer to the JMVRA AI content policy and the plagiarism guidelines.

Interpreting Similarity Results During Revision of Your Paper

Receiving a report with highlighted text can be stressful. These suggestions help researchers respond methodically, correct genuine issues and explain legitimate overlap when needed.

  • Start with the largest matches. Review the biggest blocks of overlapping text first, since they usually carry the most risk. Smaller scattered matches often come from common phrases and names.
  • Exclude what is properly excluded. Methods that rely on standard procedures, titles and reference lists commonly produce matches. Understand which settings the checker applied before judging the result.
  • Rewrite methods with care. Describe standard procedures in your own words while keeping the technical meaning intact, and cite the original protocol. Never alter terms in a way that changes the science.
  • Quote sparingly and precisely. Use direct quotation only when the exact wording matters, and mark it clearly. Overusing quotes raises similarity and weakens your own voice.
  • Keep a note for the editor. If a high match is justified, briefly explain it in your cover letter. A calm, honest explanation demonstrates good faith.

Address large overlaps first, rewrite through real understanding and be open with editors about anything that cannot be avoided.

Questions Researchers Often Ask

Q1. Which plagiarism limit does JMVRA apply?
A manuscript needs a similarity score under 15%, verified with Turnitin/iThenticate, to move on to peer review.
Q2. Is plagiarism always indicated by a high similarity score?
Not always. Similarity tools mark text that matches a database, and that can include correctly cited quotations, standard methodology wording or your own published work. A high score calls for a review and not for automatic rejection.
Q3. What does self-plagiarism mean?
It means reusing large parts of your own published text without disclosing or citing it, and presenting it as new. It is regarded as a real ethics violation and no lesser offence simply because you wrote the original.
Q4. Is it possible to receive a plagiarism report ahead of submission?
Authors wanting to self-check before formally submitting can request a Turnitin/iThenticate plagiarism screening report through the editorial team.
Q5. How does paraphrasing differ from plagiarism?
Real paraphrasing restates an idea in your own structure and words and cites the source. Weak paraphrasing, which merely swaps a few synonyms and keeps the source's sentence structure, still gets flagged as plagiarism by both software and reviewers.
Q6. Can a low similarity score show that nothing was plagiarised?
No. The software locates matching wording, so borrowed ideas or translated passages can go unnoticed.
Q7. Which similarity level does JMVRA accept?
Overall similarity has to be under 15%, verified before review, and editors use judgement when assessing the matches.

Understanding Similarity Scores

Below 15%Similarity ceiling at JMVRA
Pre-reviewThe first step for every submission is screening
By requestAuthor-facing similarity report

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JMVRA is a Transparent, Peer-Reviewed, Open Access Journal (Refereed Journal). Following the discontinuation of the UGC and UGC-CARE journal listing, and in alignment with the latest UGC-CARE recommendations and guidelines, JMVRA is aligned with UGC’s Suggested Parameters for Choosing Peer-Reviewed Journals.

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