Wikipedia:No original research
From Wikipedia, the free encyclopedia
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This page documents an official English Wikipedia policy, a widely accepted standard that should normally be followed by all editors. Any edit to this page should reflect consensus. If in doubt, consider discussing changes on the talk page. |
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This page in a nutshell:
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| Wikipedia policy |
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| Global principles |
| What Wikipedia is not Ignore all rules |
| Content standards |
| Neutral point of view Verifiability No original research Biographies of living persons |
| Working with others |
| Civility No personal attacks Harassment No legal threats Consensus Dispute resolution |
| More |
| Full list of policies List of guidelines |
Wikipedia does not publish original research or original thought. This includes unpublished facts, arguments, speculation, and ideas; and any unpublished analysis or synthesis of published material that serves to advance a position. This means that Wikipedia is not the place to publish your own opinions, experiences, or arguments. Citing sources and avoiding original research are inextricably linked: to demonstrate that you are not presenting original research, you must cite reliable sources that are directly related to the topic of the article, and that directly support the information as it is presented.
No original research is one of three core content policies. The others are neutral point of view and verifiability. Jointly, these policies determine the type and quality of material that is acceptable in articles. Because they complement each other, they should not be interpreted in isolation from one another, and editors should familiarize themselves with all three.
If you have original research or commentary to contribute to a subject, there are numerous other places to do so, such as at WikiInfo.
The "No original research" rule does not forbid routine calculations (e.g. adding or subtracting numbers, rounding them, calculating percentages, converting them into similar units, putting them on a graph, or calculating a person's age) that add no new information to what is already present in the cited sources.
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[edit] Sources
Research that consists of collecting and organizing material from existing sources within the provisions of this and other content policies is encouraged: this is "source-based research", and it is fundamental to writing an encyclopedia. Take care, however, not to go beyond what is expressed in the sources or to use them in ways inconsistent with the intent of the source, such as using material out of context. In short, stick to the sources.
If no reliable third-party sources can be found on an article topic, Wikipedia should not have an article about the topic.
[edit] Reliable sources
Any material that is challenged or likely to be challenged must be supported by a reliable source. Material for which no reliable source can be found is considered original research. The only way you can show that your edit does not come under this category is to produce a reliable published source that contains that same material. Even with well-sourced material, however, if you use it out of context or to advance a position that is not directly and explicitly supported by the source used, you as an editor are engaging in original research; see below.
In general the most reliable sources are peer-reviewed journals and books published in university presses; university-level textbooks; magazines, journals, and books published by respected publishing houses; and mainstream newspapers. As a rule of thumb, the more people engaged in checking facts, analyzing legal issues, and scrutinizing the writing, the more reliable the publication. Material that is self-published, whether on paper or online, is generally not regarded as reliable, but see this section of Verifiability for exceptions.
[edit] Using sources
Information in an article must be verifiable in the references cited. Article statements generally should not rely on unclear or inconsistent passages nor on passing comments. Passages open to multiple interpretations should be precisely cited or avoided. A summary of extensive discussion should reflect the conclusions of the source's author(s). Drawing conclusions not evident in the reference is original research regardless of the type of source. It is important that references be cited in context and on topic.