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dc.contributor.author
Navajas Ahumada, Joaquin Mariano
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dc.contributor.author
Niella, Tamara
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dc.contributor.author
Garbulsky, Gerry
dc.contributor.author
Bahrami, Bahador
dc.contributor.author
Sigman, Mariano
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dc.date.available
2020-03-16T19:38:16Z
dc.date.issued
2018-02
dc.identifier.citation
Navajas Ahumada, Joaquin Mariano; Niella, Tamara; Garbulsky, Gerry; Bahrami, Bahador; Sigman, Mariano; Aggregated knowledge from a small number of debates outperforms the wisdom of large crowds; Nature Publishing Group; Nature Human Behaviour; 2; 2; 2-2018; 126-132
dc.identifier.issn
2397-3374
dc.identifier.uri
http://hdl.handle.net/11336/99673
dc.description.abstract
The aggregation of many independent estimates can outperform the most accurate individual judgement 1-3. This centenarian finding 1,2, popularly known as the 'wisdom of crowds' 3, has been applied to problems ranging from the diagnosis of cancer 4 to financial forecasting 5. It is widely believed that social influence undermines collective wisdom by reducing the diversity of opinions within the crowd. Here, we show that if a large crowd is structured in small independent groups, deliberation and social influence within groups improve the crowd's collective accuracy. We asked a live crowd (N = 5,180) to respond to general-knowledge questions (for example, "What is the height of the Eiffel Tower?"). Participants first answered individually, then deliberated and made consensus decisions in groups of five, and finally provided revised individual estimates. We found that averaging consensus decisions was substantially more accurate than aggregating the initial independent opinions. Remarkably, combining as few as four consensus choices outperformed the wisdom of thousands of individuals.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Nature Publishing Group
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Decision Making
dc.subject
wisdom of crowds
dc.subject
deliberation
dc.subject
social influence
dc.subject.classification
Otras Ciencias Naturales y Exactas
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dc.subject.classification
Otras Ciencias Naturales y Exactas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Aggregated knowledge from a small number of debates outperforms the wisdom of large crowds
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-03-13T13:36:08Z
dc.journal.volume
2
dc.journal.number
2
dc.journal.pagination
126-132
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Navajas Ahumada, Joaquin Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Torcuato Di Tella; Argentina
dc.description.fil
Fil: Niella, Tamara. State University of Oregon; Estados Unidos. Universidad Torcuato Di Tella; Argentina
dc.description.fil
Fil: Garbulsky, Gerry. TED; Argentina
dc.description.fil
Fil: Bahrami, Bahador. University College London; Estados Unidos. Universidad de Múnich; Alemania
dc.description.fil
Fil: Sigman, Mariano. Universidad Torcuato Di Tella; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Nature Human Behaviour
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s41562-017-0273-4
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1038/s41562-017-0273-4
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