Almost every journal now runs submitted manuscripts through plagiarism-detection software before sending them for review. A high similarity score can lead to immediate rejection, and in serious cases a published paper can be retracted years later. Yet most plagiarism in student and early-career writing is not deliberate. It happens because authors are unsure about how to use other people’s work correctly.
This article explains the common forms of plagiarism and practical habits that help you avoid them.
What counts as plagiarism?
Plagiarism means presenting someone else’s words, ideas, data or images as your own without proper credit. It takes several forms:
- Direct copying: Copying sentences or paragraphs from a source without quotation marks and citation.
- Mosaic or patchwork plagiarism: Taking phrases from a source and mixing them with your own words, changing a few terms here and there, without citing.
- Paraphrasing without credit: Rewriting someone’s idea fully in your own words but not saying where the idea came from.
- Self-plagiarism: Reusing large parts of your own previously published paper in a new submission without disclosing it.
- Translation plagiarism: Translating a paper from English into Marathi or Hindi (or the reverse) and presenting it as original work.
- Data and figure plagiarism: Using tables, maps, charts or photographs from another source without permission or credit.
Understanding the similarity report
Plagiarism-checking software compares your text against published papers, websites and other submissions. It produces a similarity percentage and highlights matching passages.
A similarity percentage is not the same as a plagiarism percentage. Some matches are perfectly acceptable, such as:
- Properly quoted and cited sentences
- Standard phrases (“the present study”, “data were collected from”)
- Names of institutions, schemes and places
- Your reference list
Editors look at where the matches come from. A total score of 15% spread across many small common phrases is very different from 15% coming from a single source. Many institutions in India set their own acceptable thresholds, so check what your university and the target journal expect.
Practical habits that prevent plagiarism
1. Take notes in your own words
When you read a source, close it and write down the main point from memory. Then note the author, year and page number. This habit makes accidental copying much less likely when you later write your paper.
2. Keep quotes clearly marked
If you copy an exact sentence into your notes because you may want to quote it, put it inside quotation marks immediately and write the source next to it. Many cases of plagiarism begin with unmarked notes.
3. Paraphrase properly
A good paraphrase changes both the words and the sentence structure, and still gives credit. Replacing a few words with synonyms is not enough. Read the original passage, understand it, and explain it as you would to a colleague. Then add the citation.
4. Cite as you write
Do not plan to “add references later”. Insert the citation at the moment you use a source. Reference managers such as Zotero or Mendeley make this easier and are free to use.
5. Be careful with the literature review
The literature review is where similarity scores are usually highest. Instead of summarising each paper one by one in the original authors’ language, group studies by theme and write about what they show together.
6. Disclose reuse of your own work
If your paper builds on your thesis or a conference paper, tell the editor in your cover letter and cite the earlier work. Reuse is often acceptable when disclosed; it becomes a problem when hidden.
7. Check before you submit
If your institution provides access to plagiarism-checking software, run your final draft through it. Go through every highlighted section and decide whether it needs quotation marks, a citation or rewriting.
What about AI writing tools?
AI tools can help you improve grammar or understand a difficult concept, but text generated by them may closely resemble existing sources and can include invented references. If you use such tools, check every sentence and every reference yourself, and follow the journal’s policy on disclosing AI assistance.
Why it matters
Research builds on the work of others, and citation is how we acknowledge that. Proper credit protects the original authors, gives readers a way to check your sources, and protects your own reputation. A clean, honest paper is always a stronger paper.
— Editorial Team, Imaginative Ink Publications