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Wikipedia outperforms individuals when it comes to hindsight bias
Aileen Oeberst1,2, Ina von der Beck3, Ulrike Cress3,4
1University of Hagen, Feithstr. 188, 58084, Hagen, Germany. aileen.oeberst@fernuni-hagen.de.
Psychological Research
|March 22, 2019
Summary
Hindsight bias, the tendency to see past events as more predictable, affects individuals but not Wikipedia articles. This study found Wikipedia articles are superior to individuals in avoiding this cognitive bias.
Area of Science:
- Cognitive Psychology
- Information Science
Background:
- Hindsight bias is a common cognitive error where individuals overestimate their foresight.
- Previous research indicated potential bias in Wikipedia articles, but only for specific event types like disasters.
Purpose of the Study:
- To directly compare hindsight bias in individuals versus Wikipedia articles for the same event.
- To determine if Wikipedia articles are less susceptible to hindsight bias than individuals.
Main Methods:
- A state election event was used for comparison.
- Participants were surveyed before and after the event outcome.
- Other participants rated Wikipedia article versions for outcome predictability and inevitability.
Main Results:
- Individuals exhibited significant hindsight bias.
- Wikipedia articles did not show evidence of hindsight bias.
- Bayesian statistics supported the null hypothesis of no hindsight bias in Wikipedia.
Conclusions:
- Wikipedia articles demonstrate a lack of hindsight bias, outperforming individuals.
- This study rules out alternative explanations for Wikipedia's unbiased representation.
- Findings highlight Wikipedia's advantage over individuals in mitigating hindsight bias.
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