| Full text | |
| Author(s): |
Total Authors: 2
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| Affiliation: | [1] Univ Sao Paulo, Inst Fis Sao Carlos, Caixa Postal 369, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | COMPLEX SYSTEMS; v. 29, n. 4, p. 861-875, 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
The wisdom of crowds is the idea that the combination of independent estimates of the magnitude of some quantity yields a remarkably accurate prediction, which is always more accurate than the average individual estimate. In addition, it is largely believed that the accuracy of the crowd can be improved by increasing the diversity of the estimates. Here we report the results of three experiments to probe the current understanding of the wisdom of crowds, namely, the estimates of the number of candies in a jar, the length of a paper strip and the number of pages of a book. We find that the collective estimate is better than the majority of the individual estimates in all three experiments. In disagreement with the prediction diversity theorem, we find no significant correlation between the prediction diversity and the collective error. The poor accuracy of the crowd on some experiments leads us to conjecture that its alleged accuracy is most likely an artifact of selective attention. (AU) | |
| FAPESP's process: | 17/23288-0 - Topics on Collective Intelligence: Brainstorming, Vox Populi and Physarum polycephalum |
| Grantee: | José Fernando Fontanari |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 17/08475-9 - The wisdom of crowds: effect of the distribution of the individual guesses |
| Grantee: | Davi Arrais Nobre |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |