Question
Asked 30th Mar, 2018

What is the maximum similarity (index) percentage commonly allowed in a scientific report?

What is the maximum similarity (index) percentage commonly allowed in a scientific report? completely understand that the Plagiarism is never allowed, but I am asking in the context of marking "Masters by Coursework" students' research work.

Most recent answer

17th Oct, 2021
Gopal Shukla
Uttar Banga Krishi Vishwavidyalaya
Generally 15-25 % but varied from journal to journal and publisher to publisher

Popular Answers (1)

19th Nov, 2020
Nidhal Kamel Taha El-Omari
The World Islamic Science and Education University
Not more than 15%.
32 Recommendations

All Answers (85)

30th Mar, 2018
Mosab Nouraldein Mohammed Hamad
St.Joseph University In Tanzania
you can find some information , which may guide you in the link below:
2 Recommendations
30th Mar, 2018
Ian Kennedy
University of the Witwatersrand
I am RGmailing you.
1 Recommendation
30th Mar, 2018
Dickson Adom
Kwame Nkrumah University Of Science and Technology
The similarity index for plagiarism check is pegged at 20%.
2 Recommendations
30th Mar, 2018
Nihad Mohammed
University of Anbar
The proportion of similarity allowed in the scientific report is 20% or less.
1 Recommendation
30th Mar, 2018
Ardhendu Kundu
Jadavpur University
Approximately 15 percent similarity index should be allowed; even if the similarity index crosses that limit during initial stage of report preparation, it can be brought down with cautious efforts.
1 Recommendation
30th Mar, 2018
Mohamed EL-Shimy
Ain Shams University
< 10%
1 Recommendation
31st Mar, 2018
Malka N. Halgamuge
University of Melbourne
Thank you all, It is very informative.
31st Mar, 2018
Emad Kamil Hussein
Al-Furat Al-Awsat Technical University
15 up to 20% maximum.
1 Recommendation
31st Mar, 2018
Abiodun Olusola Omotayo
North-West University
I think it varies from 15-25%.It depends on the institution, journal or continent at times.
2 Recommendations
3rd Apr, 2018
Surendra Tryambakrao Kale
J.D. Patil Sangludkar Mahavidyalaya Daryapur (Amravati)
To maintain genuine originality of work, you always try to sustain zero plagiarism... One can definately maintain zero plagiarism using some parameters for research writing skills and citation method use.
2 Recommendations
3rd Apr, 2018
Rohith R Krishnan
Mahatma Gandhi University
Less than 25%
1 Recommendation
3rd Apr, 2018
Malka N. Halgamuge
University of Melbourne
I totally agree with you, Surendra, Thanks.
8th Oct, 2018
Chun Yin Ng
Leiden University
I personally agree with the answers of Dickson Adom and Nihad Mohammed and others, namely that the maximum similarity is 20%.
However, I actually disagree with Surendra T. Kale. There is an evident difference between plagiarism and similarity, and as the question was concerning similariy I therefore disagree with your answer. Of course plagiarism must be avoided by all means necessary. But again, that was not the question.
@Surendra Tryambakrao Kale. It is nearly impossible to have 0% similarity in your text. For example, if you write the following words in your paper: "Using ultra-high performance liquid chromatography tandem mass-spectrometry for measuring ... " . That is an array of almost 10 words long which will inevitably be marked as similar/not original by most the plagiarism checkers. But those words are universally and widely used in the field of analytical sciences. It is absurd and nearly impossible to state those words other wise. Because then you will have something like: "Using liquified chromatography, the tandem version, combined with mass-spectromatry while having a performance that is ultra-high for ... ". If you actually write that, other scientists will think that you are crazy.
19 Recommendations
8th Oct, 2018
Surendra Tryambakrao Kale
J.D. Patil Sangludkar Mahavidyalaya Daryapur (Amravati)
Zero level is better but not more than five percent if you have good author kindly follow.
1 Recommendation
15th Mar, 2019
Hamza Abubakar
Universiti Sains Malaysia
i totally agreed Chun Yin Ng, it is nearly impossible to have zero similarity in scientific research more especially mathematics.
2 Recommendations
22nd May, 2019
Elmi Nurhaidah Zainuddin
Universitas Hasanuddin
I want to know how much the maximum of similarity index for Q1 Journals ?
2 Recommendations
23rd May, 2019
Hamza Abubakar
Universiti Sains Malaysia
It depends on the journal and specific area of study. However, most of the scientific journals do accept 13-25% the similarity.
1 Recommendation
30th Dec, 2019
Leake Gebremeskel
Aksum University
I want to know the accepted similarity index of dove press
1 Recommendation
24th Oct, 2020
Karwan Wasman Qadir
Salahaddin University - Erbil
It depends on the quality of the journals and the institutes. It varies from 10-25%.
Most of the scientific journals do accept the rate of similarity between 10-20%
1 Recommendation
25th Oct, 2020
Mosab Nouraldein Mohammed Hamad
St.Joseph University In Tanzania
I think 25%.
27th Oct, 2020
Abidina Abba
Federal University Lokoja
for me it should be less than 10% for most scientific based journals
2 Recommendations
27th Oct, 2020
Mosab Nouraldein Mohammed Hamad
St.Joseph University In Tanzania
based on journal, and ranged from 0-25%
1 Recommendation
30th Oct, 2020
Wali Khan Ahmadzai
Shaikh Zayed University
15 to 20 percent is okay although it depends on the journal and institution.
30th Oct, 2020
Mosab Nouraldein Mohammed Hamad
St.Joseph University In Tanzania
75% unique article is accepted
Deleted profile
Is bibliography included or excluded while checking the plagiarism?
and what is the percentage in survey papers accepted by the sci journals?
1 Recommendation
4th Nov, 2020
Mosab Nouraldein Mohammed Hamad
St.Joseph University In Tanzania
its zero % for some journals .
19th Nov, 2020
Nidhal Kamel Taha El-Omari
The World Islamic Science and Education University
Not more than 15%.
32 Recommendations
20th Nov, 2020
Mosab Nouraldein Mohammed Hamad
St.Joseph University In Tanzania
25%
25th Nov, 2020
M. Fernández-Guasti
Universidad Autonoma Metropolitana Iztapalapa
Transcript from an Elsevier journal just received (24/11/2020) :
Dear Colleague Your paper has similarity 6% with the paper ***. This must be less than 2%. Until then, the paper is rejected.
2 Recommendations
25th Nov, 2020
Sunny Bhatia
National Institute of Technology, Kurukshetra
Similarity from a single source should not be more than 2% and overall anything between 15 to 20% should be acceptable
2 Recommendations
26th Nov, 2020
Mosab Nouraldein Mohammed Hamad
St.Joseph University In Tanzania
some journals require zero similarity.
1 Recommendation
4th Dec, 2020
Parvaneh Mohseni-Moghaddam
Tehran University of Medical Sciences
Below 15% is acceptable by the journals and a similarity of >25% is considered as high percentage of plagiarism.
5th Dec, 2020
Mosab Nouraldein Mohammed Hamad
St.Joseph University In Tanzania
Some journals needs 0% ( original article), some accept up to 20% of plagarism.
2 Recommendations
5th Dec, 2020
Padmini Nigam
Dehradun Institute of Technology
It should be less than 10%.
1 Recommendation
5th Dec, 2020
Mosab Nouraldein Mohammed Hamad
St.Joseph University In Tanzania
Padmini Nigam it has a range , no constant percentage, range from 0-25%.
2 Recommendations
8th Dec, 2020
Muluken Asres
CORE Group Polio Project
similarity and plagarism are totally different. Zero tolerrance for plagarism. For similarity acknowledging the source is the primary issue. The percentage for similarity vary and the major focus is percentage of similarity from each source. My university set below 5% similarity in each source.
1 Recommendation
10th Dec, 2020
Philip Adesola Adewuyi
Bells University of Technology
Most journal will accept similarity of 15% and <2% for a singular source. Rules vary though from journal to journal, school to school.
2 Recommendations
10th Dec, 2020
Karwan Wasman Qadir
Salahaddin University - Erbil
It is better not exceed 15%, but according to the Turnitin database, the percentage results is a green colour from 1% to 24%.
As you know, Turnitin is officially used by many universities, institutes and journals.
1 Recommendation
11th Dec, 2020
Mosab Nouraldein Mohammed Hamad
St.Joseph University In Tanzania
It depends in the editorial policy of the journals.
2nd Jan, 2021
Mahdi Aswad
Salahaddin University - Erbil
I think 20% is more acceptable by many Universities.
1 Recommendation
8th Jan, 2021
AG. Eka Wenats Wuryanta
University Multimedia Nusantara
Not more than 20%....baseline max 20%
1 Recommendation
8th Jan, 2021
Mosab Nouraldein Mohammed Hamad
St.Joseph University In Tanzania
based on type of article , ranged from 0-25% , from original article to review article.
29th Jan, 2021
Kaleemullah Bhatti
Mehran University of Engineering and Technology
According to Turnitin <24% is green i.e may be acceptable. It depends upon journals policy. Similarity and Plagiarism are totally different. I personally feel that every journal should check every index in detail for Plagiarism rather than overall similarity index. <40% may also be acceptable in some cases.
1 Recommendation
29th Jan, 2021
Mosab Nouraldein Mohammed Hamad
St.Joseph University In Tanzania
according to the type of your article , ranged 0-25%.
29th Jan, 2021
Madukaibeya Nwatu
Abia State University
Similarity and Plagiarism are different, it will good if the overall similarity index of a whole work is less than 40% showing that more than 60% of the work is not similar to any work= Original. This view is based on the fact that the similarity report must paint RED the chapters, introduction, literature review, scope of study, discussion of major findings, healthcare delivery system, clinical nursing practice, etc. etc. etc. which every research work all over the world uses.
1 Recommendation
Deleted profile
As per rule of higher education committee of a country, for best standard the similarity index avoiding bibliography should be less than 15% and the similarly index from a single source must be less than 5%.
To achieve this, a researcher is not supposed to copy any sentence or word from available published works including the definitions.
Software Turnitin will find out it.
Though Research means Re - Search, in all research articles the researcher is supposed to use existing definitions and specify previous works. But that will create similarity index. So the definitions also required new representation style.
2 Recommendations
16th Feb, 2021
Faraed Salman
Erbil polytechnic university
There is a lack of consensus or clear-cut-rules on what percentage of plagiarism is acceptable in a manuscript. Going by the convention, usually a text similarity below 15% is acceptable by the journals and a similarity of >25% is considered as high percentage of plagiarism.
3 Recommendations
16th Feb, 2021
Md. Abdur Razzak Choudhury
Sylhet Agricultural University
Not more than 25%.
16th Feb, 2021
Mohammad Monirul Hasan Tipu
Bangladesh Agricultural Research Institute
According to journal policy & type of article it is up to 25%
17th Feb, 2021
Mohammad Amzad Hossain
National University of Ireland, Galway
There is not a clear-cut-rules about what percentage of plagiarism is acceptable in a new manuscript. Generally, a text similarity below 15% is acceptable by most journals.
1 Recommendation
6th Mar, 2021
Amirhosein Rajabzadeh Assarha
University of Tehran
It totally depends on the type of the article, the field and the subject, the journal policy, and of course the section of matched texts.
1 Recommendation
11th Mar, 2021
Tajudin Aliyi
Ethiopian Institute of Agricultural Research
<25%
17th Mar, 2021
Mohammad Sirajul Islam
Southern University Bangladesh
All are right. But can anybody share a reference to justify the similarity index?
14th May, 2021
Nonde Lushinga
Harbin Institute of Technology
less than 15% is generally acceptable by most journals
28th May, 2021
Steven Ronald Firer
University of the Free State
A tragedy is about to befall the academic world. The priority of similarity over plagiarism. I predict that significant and ground breaking research is going to be rejected in the name of similarity and that my friends is a bigger tragedy than plagiarism.
28th May, 2021
Steven Ronald Firer
University of the Free State
A synthesis of the literature will no longer be permitted. The use of technical words will no longer be permitted. Every accounting and auditing paper in the world has the same technical phrases and thats about 30 percent similarity. Its about plagiarism not simililarity. You are all wrong.
1 Recommendation
14th Jun, 2021
Olusegun Emmanuel Ogundele
Tai Solarin University of Education
This is subjective but each journal editorial team should determine the acceptable limits based on their standards. But generally, it is almost impossible to have 0% similarity, so a value of 25% max should be okay.
1 Recommendation
22nd Jun, 2021
Anuradha Rajapaksha
University of Ruhuna
we are accepting below 10%
8th Jul, 2021
Plabon Saha
Kalyani Government Engineering College
Maximum 15%
1 Recommendation
12th Jul, 2021
Swati Chaturvedi
Guru Gobind Singh Indraprastha University
This annoys me too. But what I understand both Similarity Index and Plagiarism should not be considered the same.
According to me, It should depend on the type and part of the article and of course the journal. For example, What's your contribution (as original) maybe...how you introduce your subject of research 'Introduction'.. and how you explain your findings 'Results and Discussion'.
As far as the methodology is concerned, you sometimes refer to a paper that is already followed by many researchers with similar work, then how much there will be a scope in writing it differently unless It is your own method. Same for the other parts like, materials...instrumentation..references etc. Thanks & Regards
20th Jul, 2021
Dinesh RAMKRUSHNA Rotake
Indian Institute of Technology Hyderabad
The maximum similarity is 15% for SCI/SCIE/SCOPUS Journals bur in technical reports such as thesis and progress reports may allow up to 20%.
21st Jul, 2021
Philip Adesola Adewuyi
Bells University of Technology
It is always good to go below 20%.
28th Jul, 2021
Patrick Ayi Ewah
University of Calabar
Less than 20% is ok for me
1 Recommendation
8th Aug, 2021
Khudija Mushtaq
Postgraduate College of Nursing Punjab, Lahore, Pakistan
I think 15% or less than 15% should be considered.
11th Aug, 2021
Juliana Pereira
University of São Paulo
15%
17th Aug, 2021
Oluwadara Pelumi Omotayo
North-West University
I know of 25%
8 Recommendations
17th Aug, 2021
Zaheda Dakhil
University of Baghdad
Less than 15%
5 Recommendations
18th Aug, 2021
Muhammad Mohiuddin
Laval University
it depends on the kind of paper; review paper vs. empirical paper.
1 Recommendation
31st Aug, 2021
Thanikachalam Vedhathiri
National Institute of Technical Teachers Training and Research
Provide the contribution of the original author and criticize the utility, which needed further verification, application, and additional investigation. There are many findings based on the limited sample. You have to cross verify with a larger population. You may have to improve the ideas. You are not stealing but you enlarge the scope or point out the limitations. Mawslaw's theory has been enlarged by Porter, even though the original contribution stands as such. We get additional use with more focus on the generalization
1st Sep, 2021
Ikechukwu Caleb
University of Ibadan
15% is the best
2nd Sep, 2021
Thanikachalam Vedhathiri
National Institute of Technical Teachers Training and Research
10 t0 15% is acceptable, Researchers have to site the papers which are in the area of the topic. A textbook will elaborate on the developments available in the area. The readers are assisted and the authors are recognized.
In research papers, there is no need to elaborate on the work of other researchers, but the research has to add more through his/her research.
2nd Sep, 2021
Khudija Mushtaq
Postgraduate College of Nursing Punjab, Lahore, Pakistan
Yes sir, I am agree with you.
4th Sep, 2021
Ayodele James Oyejide
University of Ibadan
I do my check personally before submitting to any Journal and good enough, I haven't had problems with the similarity index. My target is 15% for original articles and 20-25% for review articles. It's a lot of work to achieve that range for review papers, but it is possible.
Importantly, it is similarity index, not necessarily plagiarism. For instance, there are technical terms in some fields that almost every researchers use. If you try to rewrite them, you may undermine the meaning. So, they are unavoidable, as well as many sentences you wrote your way but have been written same way in a publication. Don't expect 0% SI, except you are writing and working in isolation.
1 Recommendation
13th Sep, 2021
Nusrat Hafiz
Universiti Putra Malaysia
For our students, we usually allow a range of 10-15%, which is widely acceptable worldwide.
For my own research, I strive to keep it below 10%. Rephrasing is much better technique than paraphrasing.
1 Recommendation
13th Sep, 2021
Mir Mohammed Nurul Absar
Chittagong Independent University
It varies from journal to journal. Some editors/journals have set the acceptable limit to 15% subject to individual paper’s/source’s similarity not exceeding 2 or 3%. There could be some papers whose similarity percentage is high up to 25%, but the individual paper/source’s similarity does not exceed more than 1%.
On the other hand, some journals/supervisors/editors say that the acceptable limit is 10% similarity without references and up to 30% with references.
Therefore, it is expected that any individual paper/source should not exceed 2%.
13th Sep, 2021
Olusegun Emmanuel Ogundele
Tai Solarin University of Education
Thanks
14th Sep, 2021
Saurabh Kumar
Motilal Nehru National Institute of Technology
There is a lack of consensus or clear-cut rules on what percentage of plagiarism is acceptable in a manuscript. Usually, a text similarity below 15% is acceptable by the journals and similarity of >25% is considered as a high percentage of plagiarism
17th Sep, 2021
Arindam Roy
Vidyasagar University
There is no clear rule regarding similarity index. However upto 15% is considered.
24th Sep, 2021
Thanikachalam Vedhathiri
National Institute of Technical Teachers Training and Research
Cite the key findings of other authors. The original papers of the cited authors will provide the needed details. Look for the gaps. Build your research paper based on your findings, innovations, and suggestions. No need to describe or repeat the findings of others.
2nd Oct, 2021
Desi Suyamto
If plagiarism is measured based on text similarity, then I am thinking of innovating a novel words that have never been used by others, so that my paper will have zero percent similarity. 😂
If we still use the current criteria and indicators for defining plagiarism, within the next decades, number of published papers will likely decrease.
3rd Oct, 2021
Thanikachalam Vedhathiri
National Institute of Technical Teachers Training and Research
If your topic of research is totally a new one, then you can develop without any reference to the research work done by the peer. If you are planning to introduce a new development that is not there, you have to give the gaps in the existing research works.No need to elaborate. This falls into plagiarism.
Can you help by adding an answer?

Similar questions and discussions

Related Publications

Article
A brief paper that employs these structural and stylistic guidelines. It ain't perfect, and heck, it hasn't even been peer-reviewed, but it's an example nonetheless. Enjoy! General Points Aim The main purpose of a scientific report is to communicate. A typical structure and style have evolved to convey essential information and ideas as concisely a...
Got a technical question?
Get high-quality answers from experts.