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A study by Yale University cognitive scientists Gordon Pennycook and David G. Rand found that Facebook tags of fake articles "did significantly reduce their perceived accuracy relative to a control without tags, but only modestly". [18] A Dartmouth study led by Brendan Nyhan found that Facebook tags had a greater impact than the Yale study found.
Wikipedia articles can have poor quality in many ways including self-contradictions. [2] Those poor articles require improvement. Large platforms including YouTube [3] and Facebook [4] use Wikipedia's content to confirm the accuracy of the information in their own media collections.
In other cases, accuracy itself is under dispute: a certain question may indeed have a true answer, but nobody knows what it is yet, so a lack of complete information leads to people supporting a variety of possible answers. For example, the existence of extraterrestrial civilizations, or the existence of life on Europa, could be true or false ...
Articles should be based on reliable, independent, published sources with a reputation for fact-checking and accuracy. This means that we publish only the analysis, views, and opinions of reliable authors, and not those of Wikipedians, who have read and interpreted primary source material for themselves.
In addition to accuracy of individual statements, it is an objective that articles provide overall accurate coverage of the topic, albeit the latter is less clear-cut. This includes balanced coverage, with inclusion weighted by degree of significance, informativeness on the topic, and directness of relevance to the topic.
Base articles on reliable, independent, published sources with a reputation for fact-checking and accuracy. Source material must be published, on Wikipedia meaning made available to the public in some form. [f] Unpublished material is not considered reliable. Use sources that directly support the material presented in an article and are ...
Oskamp tested groups of clinical psychologists and psychology students on a multiple-choice task in which they drew conclusions from a case study. [37] Along with their answers, subjects gave a confidence rating in the form of a percentage likelihood of being correct. This allowed confidence to be compared against accuracy.
The study found that while the information in these articles tended to be accurate, the articles examined contained many errors of omission. [ 67 ] A 2012 study co-authored by Shane Greenstein examined a decade of Wikipedia articles on United States politics and found that the more contributors there were to a given article, the more neutral it ...