Wikipedia:Systemic bias

For the WP:Reliable sources guideline, see Wikipedia:BIASED § Biased or opinionated sources.

For the WikiProject, see Wikipedia:WikiProject Countering systemic bias.

"WP:BIAS" redirects here. You may be looking for Wikipedia:Gender bias and editing on Wikipedia.

Wikipedia strives for a neutral point of view, both in terms of the articles that are created and the content, perspectives and sources within those articles. However, the encyclopedia fails in this goal because of systemic bias created by the editing community's narrow social and cultural demographic. Bias can be either implicit when articles or information are missing from the encyclopedia, or explicit when an article's content or sources are biased. This essay addresses issues of systemic bias specific to the English Wikipedia.

As a result of systemic bias, Wikipedia underrepresents the perspectives of people in the Global South, people who lack adequate access to the internet or a serviceable computer, and people who do not have free time to edit the encyclopedia. Topics for which reliable sources are not recently published, easily available online, and in English are systematically underrepresented, and Wikipedia tends to show a White Anglo-American perspective on issues due to the preponderance of English-speaking editors from Anglophone countries. The perspectives of women are also underrepresented.

While there are some external factors that contribute to systemic bias (such as availability of sources and disproportionate global media coverage of events in predominantly white Anglophone countries), there is also a vast body of critical and decolonial scholarship that offers broader perspectives than those that are presently available on Wikipedia. These peer-reviewed studies provide reliable sources that are relatively easy to incorporate into the encyclopedia and have enormous potential for countering systemic bias.

The "average Wikipedian"

Wikipedia's systemic bias portrays the world through the filter of the experiences and views of the "average Wikipedian". The common characteristics of average Wikipedians inevitably color the content of Wikipedia. The average Wikipedian on the English Wikipedia in 2005 was

1. white
2. male
3. technically inclined
4. formally educated
5. an English speaker (native or non-native)
6. aged 15–49
7. from a majority-Christian country
8. from a developed nation
9. from the Global North
10. likely employed as a white-collar worker or enrolled as a student rather than being employed as a blue-collar worker.

Women are underrepresented

See also: Gender bias on Wikipedia and WP:WikiProject Countering systemic bias § Selection based on gender bias

Women are underrepresented on Wikipedia, making up only 8.5–15% of active contributors in 2011. A peer-reviewed study published in 2013 estimated 16.1% of editors were women.

The gender gap has not been closing over time and, on average, female editors leave Wikipedia earlier than male editors. Research suggests that the gender gap has a detrimental effect on content coverage: articles with particular interest to women tend to be shorter, even when controlling for variables that affect article length.

Women typically perceive Wikipedia to be of lower quality than men do.

Those without Internet are underrepresented

Population of Internet users by country (ITU figures, 2012)

Internet usage by percentage of each country's population (2016)

Internet access is required to contribute to Wikipedia, so people who have less access to the internet, including people in developing nations, the poor, the disabled, and the elderly, are underrepresented on Wikipedia. The Wikimedia foundation estimates that "80% of our page views are from the Global North, and 83% of our edits." Groups who lack access to information technology, schooling, and education include African Americans and Latinos in the U.S., Indigenous peoples in Canada, Aboriginal Australians, and poorer populations of India, among others. Wikipedians are likely to be more technically inclined than the average internet user because of the technical barrier presented by the software interface and the Wiki markup language that discourage many potential editors. The VisualEditor offered by the Wikimedia Foundation for many of its projects (including the English Wikipedia), is buggy and increases load times.

Mobile device users are underrepresented

While most Internet traffic is generated by smartphones, the majority of Wikipedia edits are done on desktop and laptop computers. MediaWiki's functionality and Wikipedia's policies and guidelines were primarily designed for editors using desktop web browsers. Editors who access the Internet through a mobile device may encounter difficulties with editing on Wikipedia using the mobile website and apps. Also, it is significantly more burdensome for mobile device users to participate in talk page discussions as the editing interface is less accessible on mobile devices.

English-speaking editors from Anglophone countries dominate

Despite the many contributions of Wikipedians writing in English as a non-native language, the English Wikipedia is dominated by native English-speaking editors from Anglophone countries (particularly the United States, United Kingdom, Canada, and Australia). Anglophone countries are mostly in the global North, thereby accentuating the encyclopedia's bias to contributions from First World countries. Countries and regions where either English is an official language (e.g. Hong Kong, India, Pakistan and other former colonies of the British Empire) and other countries where English-language schooling is common (e.g. Germany, the Netherlands, and some other European countries) participate more than countries without broad teaching of English. Hence, the latter remain underrepresented. The majority of the world's population lives in the Northern Hemisphere, which contributes toward a selection bias to a Northern Hemisphere perspective. This selection bias interacts with the other causes of systemic bias discussed above, which slants the selection to a pro-Northern Hemisphere perspective. Wikipedia is blocked in some countries due to government censorship. The most common method of circumventing such censorship, editing through an open proxy, may not work as Wikipedia may block the proxy in an effort to prevent it from being abused by certain users, such as vandals.

An American or European perspective may exist

"WP:GLOBAL" redirects here. You may also be looking for Wikipedia:Global rights policy or Wikipedia:Global project.

Worldwide density of geotagged Wikipedia entries as of 2013

Worldwide density of GeoNames entries as of 2006

All geolocated images in Wikimedia Commons as of 2017

Maps of geotagged Wikipedia articles and geolocated images on Wikimedia Commons show notable gaps in comparison to the density of items in the GeoNames database.

Most English-speaking (native or non-native) contributors to Wikipedia are American or European, which can lead to an American or European perspective. In addition, Anglophone contributors from outside of the United States and countries in Europe are likely to be more familiar with those countries than other parts of the world. This leads to, for example, a 2015 version of "Demonym" (an article that ostensibly is on all demonyms for all peoples across the globe) listing six different demonyms in the article lede, with five of them being western or central European nationalities, and the other being Canadian. Another example is that a 2015 version of the article "Harbor" listed three examples in the article lede, all from California.

External factors

Because reliable sources are required by Wikipedia policy, topics are limited in their contents by the sources available to editors. This is a particularly acute problem for biographies of living persons. The extent to which Wikipedia editors can correct for external factors is a matter of debate — should Wikipedia reflect the world as it presents itself, or as Wikipedians would hope the world could be?

Availability of sources may cause bias

Availability of sources is not uniform. This manifests both from the language a source is written in and the ease with which it can be accessed. Sources published in a medium that is both widely available and familiar to editors, such as a news website, are more likely to be used than those from esoteric or foreign-language publications regardless of their reliability. For example, a 2007 story on the BBC News website is more likely to be cited than a 1967 edition of the Thai Post or Večernje novosti. Similarly, the cost of access to a source can be a barrier; for example, most research in astronomy is freely available to the public via arXiv or NASA ADS, while many law journals are available only through costly subscription services.

Notability is more difficult to establish in non-Anglophone topics because of a lack of English sources and little incentive among anglophone participants to find sources in the native language of the topic. A lack of native language editors of the topic only compounds the problems. Publication bias and full-text-on-the-net bias also make it more likely that editors will find reliable coverage for topics with easily available sources than articles dependent on off-line or difficult to find sources. The lack of sources and therefore notability causes articles to go through the deletion process of Wikipedia.

Representation in sources may cause bias

Representation within sources is not uniform due to societal realities, and the external lack of coverage results in an internal lack of coverage. A 2015 survey of material from 2000 U.S. newspapers and online news found that:

• Between 1983 and 2008 in 13 major U.S. newspapers, 40% of mentions went to 1% of names, and the people that received the most mentions were almost all male.
• Male names in those 13 newspapers were mentioned four times as often as female names.
• When the dataset was expanded to all 2000 sources, the ratio increased to nearly 5:1.
• The authors proposed that "the persistent social realities of acute gender inequalities at the top in politics, the business world, and sports translate into highly imbalanced gender coverage patterns".
• The Global Media Monitoring Project (GMMP) follows trends in newspaper, radio, television, internet news and news media tweets and, as of 2015, finds that women make up 24% of persons that are heard, seen, or read about. GMMP also noted imbalance in the subject matter of topics reported in the news overall: 27% social/legal, 24% government/politics, 14% economy, 13% crime/violence, 11% celebrity/arts/sports, and 8% science/health (and 2% other).

Content reflects the bias in a source

Wikipedia started with a vision, a "radical idea", later expressed by cofounder Jimmy Wales: "Imagine a world in which every single person on the planet is given free access to the sum of all human knowledge. That's what we're doing." That means that it is part of Wikipedia's function to document biases, opinions, and points of view. They are part of "all human knowledge", and we find them in the reliable sources we use.

Wikipedia content reflects the biases in the sources it uses. The neutral point of view (NPOV) policy requires articles to fairly and proportionately represent the views published in reliable sources. It does not permit editors to "correct" or remove biases they see in sources, or to allow their own beliefs and opinions to "get between" the sources and the content. Editors should put their own opinions aside and "stay out of the way" by neutrally documenting what a source says, including its opinions and biases. That means that when editors edit neutrally, Wikipedia content will reflect the biases found in reliable sources.

Examples

• Ethnocentric articles present a national situation as if it were global. In-depth coverage of national situations belongs in a national article.
• Wikipedia editors belong to a social class that has internet access and enough leisure time to edit Wikipedia articles, so issues of interest to other social classes aren't well covered.
• Perspective bias is internal to articles that are universal in aspect. It is not at all apparent from lunch (see tiffin) or the linguistic term continuous aspect that these concepts exist outside of the industrialized world.
• Popular culture topics, especially television and video games, are often covered as if only the US, the UK, and Japan exist (depending on the origin of the Wikipedian).
• The historical perspective of the Allies of World War II, particularly the US and the United Kingdom, prevails. As of March 22, 2012, 11 featured pictures on World War I were of Allied origin and none from the Central Powers.
• Articles containing a "Religious views" section frequently include Christianity, Islam, and Judaism while neglecting the views of other religions. Ideally, an article describing religious views on a topic should incorporate Christian, Muslim, Hindu, and Buddhist views, at a minimum, though the exact choice of religious opinions will depend upon the topic's scope (e.g., a Chinese topic might not necessitate a Christian view, but it might necessitate a Taoist view). Religions' views should be allocated space in accordance with the policy on neutral point of view and due weight. One should be especially careful to not give more weight to Christian views on a non-Christian topic than to the views of religions more associated with that topic. For instance, as of 13 April 2022, the "Influence" section of the article on the Zohar, a foundational work in Jewish mysticism, devoted four times as much space to the document's influence on Christianity as it did to its influence on Judaism.
• Wikipedia content is skewed by widespread editing by persons with conflicts of interest, including corporations who pay staffers and consultants to create articles about themselves. This skews Wikipedia content toward POVs belonging to persons and corporations who pay for marketing.
• Articles where the article name can mean several different things tend to default to subject matter more familiar to the average Wikipedian.
• Eurocentricism is particularly visibile in coverage of recent events. Such events are edited out of proportion with their significance. Jennifer Wilbanks, an American woman who attracted media attention when she was presumed kidnapped but actually ran away to avoid marrying her fiancé, has a significantly longer article than Bernard Makuza, who was Prime Minister of Rwanda from 2000 to 2011. Additionally, the "In the news" section on Wikipedia's front page features a disproportionate amount of news from English-speaking nations.
• Recentism is a bias toward coverage of recent events. It is caused by the difficulty of finding journals, magazines, and news sources from the pre-internet era.
• Some astronomy articles discuss the night sky as seen from the Northern Hemisphere without adequate coverage of the view from the Southern Hemisphere. Sometimes "not visible from the Northern Hemisphere" is used as a synonym of "not visible at all". Some obscure constellations in the Northern sky are covered in more depth than more prominent Southern constellations.
• Articles often use Northern Hemisphere temperate zone seasons to describe time periods that are longer than a month and shorter than a year. Such usage can be confusing and misleading for people who live in the Southern Hemisphere and for people in tropical areas that do not experience temperate-zone seasons.
• Due to severe restrictions on the use of images that are not free content, certain groups of articles are more likely to be illustrated than others. For example, articles on American politicians often have images while articles on Nepalese politicians usually do not.

There is further information on biases in Geography, in Politics, in History, and in Logic. See also Countering systemic bias: Project details for an older introduction.

Perceptions of political bias

Two studies in 2024 were reported to have concluded that Wikipedia had a left-leaning political bias and that articles showed systematic favoritism towards progressive figures and sources, raising concerns about Wikipedia's influence on developing Artificial intelligence systems.

Why it matters

Systemic bias violates neutral point of view, which is one of Wikipedia's five pillars, so it should be fixed.

What you can do

Read about other people's perspectives, work to understand your own biases, and try to represent Wikipedia's NPOV policy in your editing. Invite others to edit, and be respectful of others' views. Avoid topics where you expect that you are biased or where you don't wish to make the effort to overcome those biases.

Read newspapers, magazines, reliable websites, and other versions of Wikipedia in languages other than English. If you know only English, read articles from other countries where English is a primary language, like Australia, Canada, India, Kenya, New Zealand, Pakistan, South Africa, or Nigeria. Also, some countries where English is not an official language do have important English-language press (such as Brazil, Egypt, or Israel). Where such English-language press is not available, automated translation, though imperfect and error-prone, can enable you access articles in many languages, and may be a reasonably adequate substitute. Consider learning another language.

There is a vast body of critical and decolonial scholarship that offers much broader perspectives than those that are presently available on Wikipedia. These peer-reviewed studies provide reliable sources that are relatively easy to incorporate into the encyclopedia and have enormous potential for countering systemic bias.

Use judicious placement of the {{Globalize}}, {{Globalize section}}, and {{Globalize-inline}} templates in Wikipedia articles which you believe exhibit systemic bias, along with adding your reasoning and possible mitigations to the corresponding talk pages.

Barnstar

		The Anti-Systemic Bias Barnstar
		This Barnstar may be awarded to Wikipedians who help reduce the encyclopedia's systemic bias.

Award this barnstar by placing {{subst:Anti-Systemic Bias Barnstar|reason}} on user talk pages.

See also

• Academic studies about Wikipedia § A minority of editors produce the majority of persistent content
• WP:Tendentious editing § Characteristics of problem editors
• Criticism of Wikipedia § Systemic bias in coverage
• Wikipedia:WikiProject Countering systemic bias/Global perspective
• Wikipedia:Geographic imbalance
  • List of countries by number of Internet users
• Bias blind spot
• FUTON bias
• WEIRD bias
• Gender bias on Wikipedia
• Racial bias on Wikipedia
• Halo effect
• {{Globalize}} template
• WP:Bias and prejudice, a principle from the Arbitration committee
• Wikipedia:Notability is not a level playing field
• Wikipedia:NPOV means neutral editing, not neutral content
• Wikipedia:Race and ethnicity
• Wikipedia:WikiProject Indigenous peoples of North America/Determining Native American and Indigenous Canadian identities - most Wikipedians find this topic overwhelming and confusing; we're here to help
• False consensus effect

External links

• Single white males: Systemic bias in Wikipedia’s obsessions Wikipediocracy blog entry on systemic bias
• Under Reported Stories by Thomson Reuters Foundation
• Under-Told Stories